In a study of a weight loss program, 40 subjects lost a mean of 3.0 lb after 12 months. Does the weight loss program have statistical significance? In a study of a weight loss program, 40 subjects lost a mean of 3.0 lb after 12 months. Does the weight loss program have statistical significance?

Answers

Answer 1
no because it is taking the mean if the whole group and not each individual
Answer 2

Answer:

The weight loss program is statistically significant.

Step-by-step explanation:

We can define a statistically significant difference or result as a result which is not attributed to chance. In other words we can say that a statistical significance shows if the difference observed between groups is real or if it has occurred simply due to chance.

Here, given is that 40 subjects lost a mean of 3.0 lb after 12 months.

So, here the weight loss program is statistically significant as the results are unlikely to occur by chance.


Related Questions

A football team gained 6 yards on a first down, lost 15 yards on the second down, and gained 12 yards on the third down. how many yards do they need to gain on the fourth down to have a 10 yard gain from their starting position?

Answers

Do 6 - 15 which is, -9
then to -9 + 12 which is, 3

So then see how many something + 3 = 10

which is, 7

So 7 is your final answer 

Answer:

They need to earn 7 yards on the fourth down to have a 10 yard gain from their starting position

Step-by-step explanation:

To gain a new set of downs, a football team has four downs(tries) to gain 10 net yards, in total.

Gained 6 yards on first down

Net of 6 yards gained

Needs 10-6 = 4 yards

Lost 15 yards on second down

6 - 15 = -9

In all, they have lost 9 yards, so they need

4 + 15 = 19 yards

Gained 12 yards on third down

-9 + 12 = 3 net yards(need 10)

19 - 12 = 7

They need to earn 7 yards on the fourth down to have a 10 yard gain from their starting position

The temperature on a summer afternoon is 85 degrees Fahrenheit. Define a variable and write an expression to find the temperature after it changes. Then evaluate your expression for a decrease of degrees Fahrenheit

Answers

 b.) Any temperature change is the original temperature plus the numerical value of the change. (temp + change) If it is an increase, the number will be positive. If it is a decrease, the number will be negative. 

Since there is a decrease of 11, c would be replaced with -11. When you plug this into your expression (85 + c: 85 + -11), the answer to this would be 74.

The expression 85 + C; 85 + (-9) = 76; 76 degrees F option is (C) 85 + C; 85 + (-9) = 76; 76 degrees F is correct.

What is unit conversion?

It is defined as the conversion from one quantity unit to another quantity unit followed by the process of division, and multiplication by a conversion factor.

It is given that:

The temperature on a summer afternoon is 85 degrees Fahrenheit.

Let C be the temperature in degrees

F = (9/5)C + 32

Or

C = [5/9](F - 32)

From the data given in the question:

Any temperature change is the sum of the initial temperature and the new value.

Temperature plus changes The figure will be positive if there has been an increase. The number will be negative if there is a reduction.

Thus, the expression 85 + C; 85 + (-9) = 76; 76 degrees F option is (C) 85 + C; 85 + (-9) = 76; 76 degrees F is correct.

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The total weight of a tin and the cookies it contains is 2 pounds. after � of the cookies are eaten, the tin and the remaining cookies weigh 0.8 pounds. what is the weight of the empty tin in pounds?

Answers

3/4 of the cookies weighs 2 - 0.8 = 1.2 pounds

Thus, the total weight of cookies in the tin is given by 1.2 / 0.75 = 1.6

Therefore, the weight of the empty tin is given by 2 - 1.6 = 0.4 pounds.

Tell whether the sequence is arithmetic. If it is, what is the common difference?

15, 19, 23, 27, . . .
A. yes; 15/19
B. yes; 4
C. yes; 34
D. no

Answers

The answer is B. Yes; 4

Arithmetic sequence is the type of sequence of numbers which difference between each number will always remain constant
in the sequence above we could see the difference between one number with another is exactly 4:

15 + 4 = 19

19 + 4 = 23

23 + 4 = 27


Answer:

yes 4

Step-by-step explanation:

Which type of function best models the data in the table below?

A. inverse variation
B. linear
C. logarithmic
D. quadratic

Answers

Answer: Option A inverse variation

Explanation:

when we  compare the values from the given  table  x is increasing and y is decreasing hence we can see it is  an inverse variation.

In option B difference among  all consecutive  values of x is 2 but in y it is not same among  all consecutive  terms. In linear function change in y over change in x must be same.

In option C  x is increasing but y is decreasing which is violating the property of logarithmic function. In logarithmic function  if  x  increases then y should increase.

In option D first value of x is 2 following quadratic property meaning giving square of itself in y which is 4. But not all values of y are square of x except first value. In quadratic function value of y should be square of x.


The type of function that best models the table given is: A. inverse variation.

What is Inverse Variation?

Inverse variation can be described as a relationship between two variables, whereby, the product of the two variables will give a constant. It is expressed as, k = xy.

In an inverse variation, if one variable increases, the other variable decreases.

The table shows an inverse variation because as x increases, y decreases, and can be expressed as k = xy.

Therefore, the type of function that best models the table given is: A. inverse variation.

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Find the coordinates of the midpoint of the segment whose endpoints are H(8,2) and K(6,10).

Answers

Midpoint: ( (8+6)/2, (2+10)/2)
               =( 7, 10 )           That's the final answer.

The coordinates of the midpoint of the segment HK are (7, 6).

The midpoint coordinates of a line segment can be found using the midpoint formula:

Midpoint =[tex]\((\frac{x_1 + x_2}{2}, \frac{y_1 + y_2}{2})\)[/tex]

Given the endpoints of the segment as H(8,2) and K(6,10), let's plug these values into the formula:

Midpoint =[tex]\((\frac{8 + 6}{2}, \frac{2 + 10}{2})\)[/tex]

Midpoint =[tex]\((\frac{14}{2}, \frac{12}{2})\)[/tex]

Midpoint =[tex]\((7, 6)\)[/tex]

The coordinates of the midpoint of the segment HK are (7, 6).

To calculate the midpoint of a line segment, you can follow these steps:

1. Identify the coordinates of the endpoints of the segment. Let's call them[tex]\( (x_1, y_1) \) and \( (x_2, y_2) \).[/tex]

2. Use the midpoint formula:[tex]\( \text{Midpoint} = \left( \frac{x_1 + x_2}{2}, \frac{y_1 + y_2}{2} \right) \).[/tex]

3. Substitute the coordinates into the formula and calculate.

In this case, the endpoints are H(8,2) and K(6,10). Plug these values into the midpoint formula:

Midpoint = [tex]\( \left( \frac{8 + 6}{2}, \frac{2 + 10}{2} \right) \).[/tex]

Simplify the equation:

Midpoint =[tex]\( \left( \frac{14}{2}, \frac{12}{2} \right) \).[/tex]

Finally, calculate the values:

Midpoint =[tex]\( (7, 6) \).[/tex]

So, the coordinates of the midpoint of the segment HK are (7, 6).

complete question

Find the coordinates of the midpoint of the segment whose endpoints are H(8,2) and K(6,10).

What is the slope of this graph?

1/4

--4

--1/4

4

Answers

Answer:

4

Step-by-step explanation:

the last one I think

The slope of the graph is indeed 4.

You can find the slope of a line by using the following formula:

m = (y₂ - y₁) / (x₂ - x₁)

where m is the slope, (x₁, y₁) and (x₂, y₂) are any two points on the line.

In the given graph, two points are clearly marked: (0, 0) and (10, 40). Plugging these points into the formula, we get:

m = (40 - 0) / (10 - 0) = 40 / 10 = 4

Therefore, the slope of the graph is 4. So the answer is d. 4.

What is the slope of the line represented by the equation –5x+2y= 10 ?


–52

–25

25

52

Answers

solving for y gives. y = 5/2 x + 10 so this slope,. 5/2

y = 5/2 x + 10 slope: 5/2


Step-by-step explanation:


Given that v^y = 1/ 5 root v,
Work out the value of y.

Answers

So if v^y = 1/(5 root V), then v^y = 1/(V^(1/5)) just like how X^(1/2) = 2 root X or more commonly known as the square root.
So if v^y = 1/(V^(1/5)), then v^y = V^(-1/5) because X^(-1) = 1/X
Thus you get y = -1/5 because V^y = V^(-1/5)
Hope this helps!

Square root of 1/121 simplified

Answers

sqrt1/sqrt121
=1/11

need to use some extra characters

The square root of the given number 121 is 11.

What is the square root?

The square root of a number is the inverse operation of squaring a number. The square of a number is the value that is obtained when we multiply the number by itself, while the square root of a number is obtained by finding a number that when squared gives the original number.

The given number is √121.

We need to find the square root of given numbers.

Here, 121=11×11

= 11²

So, √121 = √11²

= 11

Therefore, the square root is 11.

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PLZ HELPPPPPPPPPPPPPPPPPPPP!!!!!!!!
The point (2, 4) is on the graph of f(x) = x^2. What is the value of b if the point (0.5, 4) is on the graph of f(bx)?

4
0.5
1
2.5

Answers

We know that (0.5, 4) is not on the graph of x^2 because when x = 0.5, f(x) = 0.25. 
Since our function is now f(bx), and we know that x = 0.5, then we need to multiply 0.5 by something so that (b * 0.5)^2 = 4 
We can now solve for b 
(b * 0.5)^2 = 4 
take the square root of both sides of the equal sign 
√(b * 0.5)^2 = √4 
b * 0.5 = 2 
divide both sides of the equal sign by 0.5 
b * 0.5 / 0.5 = 2/0.5 
b = 4 

/

Answer:

A. 4

Step-by-step explanation:

The sum of two consecutive odd integers is 72 write an algebraic equation to determine the two integers

Answers

1st one: x, 2nd wud b : x+2
if its sum is 56
means:
x+ (x+2) = 56 
2x = 56 -2
x= 54/2
x= 27
27 is the first odd number and the second is 27 + 2 i.e. 29

------------------------
sum of two numbers is 72 
let smaller: x
larger: 4+x
its sum:
(4+x) + x = 72
4+2x=72
x= 68/2
x= 34
smaller is 34 and the larger is 34 + 4 = 38

In the diagram above, rectangles DEFG and WXYZ are similar. The ratio of the area of DEFG to WYXZ is 1:4. A student's work to find ZY is shown below. Describe and correct the error in finding ZY.

Answers

Was the 12 of GF given??
The area ratio should be 1:4, so if l×w = area (a) of DEFG, then L×W = Area (A) of WXYZ.
Since 4:1 is 4×1, A = 4×a or 4a
Since GF is length (l) and is 12, we can say that 12w = a
12×4 = 48 for length of ZY (L), and WX is also 48, and to find W would be: 48W = A
48W = 4a, since A=4a
Not sure what else you want by the limited information given!

what are the real solutions

Answers

Step-1 : Multiply the coefficient of the first term by the constant   1 • -2 = -2 

Step-2 : Find two factors of  -2  whose sum equals the coefficient of the middle term, which is   1 .

     -2   +   1   =   -1     -1   +   2   =   1   That's it


Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above,  -1  and  2 
                     x2 - 1x + 2x - 2

Step-4 : Add up the first 2 terms, pulling out like factors :
                    x • (x-1)
              Add up the last 2 terms, pulling out common factors :
                    2 • (x-1)
Step-5 : Add up the four terms of step 4 :
                    (x+2)  •  (x-1)
             Which is the desired factorization

Final result : (x + 2) • (x - 1) • (x - 3) • (2x - 5)

John has 54 white marbles and nine yellow marbles Ben has 16 white marbles and 96 yellow marbles Noel has 12 white marbles and 72 yellow marbles

Answers

Answer: the question

Step-by-step explanation:Select the correct answer from the drop-down menu.

John has 54 white marbles and 9 yellow marbles. Ben has 16 white marbles and 96 yellow marbles. Noel has 12 white marbles and 72 yellow marbles.

The boys who have the same ratio of white marbles to yellow marbles are .

factor a number, variable, or expression out of the polynomial shown below. 15x^3 + 20x
a. 15x(x^2+5x)
b. 5x(3x^2+4x)
c. 5x(3x^2+4)
d. 15x(x^2+5)

Answers

Final answer:

To factor a number, variable, or expression out of the polynomial 15x³ + 20xa, you can factor out 5x to get 15x(x²+5x).

Explanation:

To factor a number, variable, or expression out of the polynomial 15x³ + 20xa, you need to identify a common factor.

In this case, the common factor is 5x. So, you can factor out 5x from each term to get: 15x(x²+5x)

Therefore, the correct answer is option a. 15x(x²+5x).

12 inches increased by 36

Answers

12 + 36 = 48

your answer is 48 inch

hope this helps
12+36= 48

48 inches is the andwer

Which statement is true about this argument?
Premises:
If two angles form a linear pair, then they are supplementary. If two angles are supplementary, then the sum of their measures is 180°.

Conclusion:
If two angles form a linear pair, then the sum of their measures is 180°.

A) The argument is not valid because the premises are not true.
B) The argument is not valid because the conclusion does not follow from the premises.
C)The argument is valid by the law of syllogism.
D)The argument is valid by the law of detachment.

Answers


answer
C)The argument is valid by the law of syllogism. 

The given argument is valid by the law of syllogism which is the correct answer would be option (C).

What are supplementary angles?

The supplementary angles are defined as when pairing of angles addition to 180° then they are called supplementary angles. There are two types of supplementary angles.

Premise: If two angles form a linear pair, they are supplementary.

If two angles are supplementary, the total of their measurements equals 180.

Conclusion: If two angles form a linear pair, the total of their measurements equals 180.

If two angles form a linear pair, they are always supplementary.

Thus, if two angles form a linear pair, the total of their measures is 180°; however, if two angles are supplementary, it does not ensure that they will form a linear pair.

So the given argument is valid by the law of syllogism.

Hence, the correct answer would be option (C).

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Abdul's average speed is 40 mph in heavy traffic, and his average speed is 60 mph in light traffic. If he was in heavy traffic for 1 hour and light traffic for 3 hours, how far did Abdul travel?

Answers

distance = speed X time

distance in heavy traffic = 40mph X 1hour = 40miles

distance in light traffic = 60mph X 3hours = 180miles

Total distance = 180 + 40 = 220miles

What is the value of x and y in this parallelogram

Answers

Answer:  "x = 109° ;  y = 71° " .
_________________________________________


y = 71 ;  

all sides must equal 360 .

71 * 2 = 142 ;

360 - 142 = 218 ;

218 ÷ 2 = 109 ;

x = 109;

x = 109° ;  y = 71° .
______________________________________

Math Help Please....

Answers

Angle M is 98 degrees.

The measure of each interior angle of a regular polygon is 150 how many sides does the polygon have?

Answers

The exterior and an interior angles always add up to 180 degrees.
180-150=One exterior angle
180-150=30
We know that all of the exterior angles add up to 360
360/30= the number of sides
360/30=12
The shape has 12 sides.

Find the missing term of the following sequence. . . . –45, __, –12, . . .

Answers

(-45 + (-12) / 2 = -28.5 
So the answer is -28.5

If you're traveling 75 mph how many miles will you go in an hour

Answers

MPH stands for Miles Per Hour, so if you're traveling at 75 MPH, that's 75 miles per hour, so 75.

What are the coordinates of the x-intercept(s) of the graph of
y = (x - 6)(x + 5)?
A) (0, -30)
B) (-5, 0) and (6, 0)
C) (0, -5) and (0, 6)
D) (-6, 0) and (-5, 0)

Answers

X = 6
X = -5

The answer is C

Answer:

B. is the answer!!!!!!!     (-5, 0) and (6, 0) is the correct answer.

Step-by-step explanation:

(-5, 0) and (6, 0) is the correct answer.

To find the x-intercepts, use the Zero Product Property and solve for x:

x - 6 = 0  

x = 6

x + 5 = 0

x = -5

Therefore, the x-intercepts are (6,0) & (-5,0).

Which best describes the graph of the function f(x) = 4(1.5)x?
A.The graph passes through the point (0, 4), and for each increase of 1 in the Bx-values, the y-values increase by 1.5.

B.The graph passes through the point (0, 4), and for each increase of 1 in the x-values, the y-values increase by a factor of 1.5.

C.The graph passes through the point (0, 1.5), and for each increase of 1 in the x-values, the y-values increase by 4.

D.The graph passes through the point (0, 1.5), and for each increase of 1 in the x-values, the y-values increase by a factor of 4.

Answers

Which best describes the graph of the function f(x) = 4(1.5)x?


B.The graph passes through the point (0, 4), and for each increase of 1 in the x-values, the y-values increase by a factor of 1.5.

Final answer:

The function f(x) = 4(1.5)^x passes through the point (0, 4), and for each unit increase in x-values, the y-values are multiplied by a factor of 1.5, not just increased by a fixed amount.

Explanation:

The function f(x) = 4(1.5)^x describes exponential growth, where the base of the exponent is greater than 1. Thus, the graph of f(x) is not a straight line but an exponential curve. Evaluating the function at x=0 gives us f(0) = 4(1.5)^0 = 4, confirming the graph passes through the point (0, 4). For each increase of 1 in the x-values, the y-values are multiplied by 1.5, not merely increased by 1.5 or 4, consistent with the properties of an exponential function. Therefore, the correct answer is that the graph passes through the point (0, 4), and for each unit increase in x-values, the y-values increase by a factor of 1.5, correlating with option B.

Which relationship is continuous? A. the number of cows a farmer has owned over the years B. the number of cookies Stan baked for the party C. the number of people attending the assembly D. the distance a runner ran during training

Answers

Final answer:

The relationship that is continuous is the distance a runner ran during training.

Explanation:

The relationship that is continuous is D. the distance a runner ran during training.

A continuous relationship is one in which the values of one variable change smoothly and consistently over a given interval. In the case of the distance a runner ran during training, the distance can be any real number and can be measured with great precision, allowing for smooth changes in the values.

The continuous relationship is the distance a runner ran during training.

A continuous relationship is one where the variable changes smoothly and can take any value within a given range. Let's analyze the options:

A. The number of cows a farmer has owned over the years:

This relationship is likely continuous, as the number of cows can change smoothly over time, and there are no discrete jumps in ownership.
B. The number of cookies Stan baked for the party:

This relationship is likely discrete, as the number of cookies is typically counted in whole numbers without smooth transitions. Stan would bake a specific, countable quantity of cookies.
C. The number of people attending the assembly:

This relationship is likely discrete, as the number of people is counted in whole numbers and does not change smoothly. Attendees come in whole individuals, not fractions.
D. The distance a runner ran during training:

This relationship is continuous, as distance can vary smoothly and take any real value within a given range. Runners can cover fractional distances, making it a continuous variable.
Therefore, the continuous relationship is D, the distance a runner ran during training.

How much simple interest is earned on 6,000 at an interest rate of 2.25% in 4 1/2

Answers

The formula is
I=prt
I interest earned?
P principle 6000
R interest rate 0.0225
T time 4 1/2 means 4 years and half
Which is 4.5 (4+1/2)

I=6,000×0.0225×4.5
I=607.5....answer

Hope it helps!

How do you find the missing value?

Answers

check the picture below.

the angle tickmarks mean, both of those angles are equal, and we know up above that angle is 60°, that means the twins are 180°/2 or 60° each then, that means the triangle is an equilateral triangle.

so those two sides are equal, and surely you'd know how much "x" is then.

Determine the slope of the graph of x3 = ln(xy) at the point (1, e).

Answers

Final answer:

The slope of the graph of x^3 = ln(xy) at the point (1, e) is 2e. This is found by taking the derivative of the equation to find a formula for the slope at any point, and then substitifying the given point into that formula.

Explanation:

To determine the slope of a graph of the equation x3 = ln(xy) at a specific point, we need to take the derivative of the equation, which gives us the slope at any point. Given the equation x^3 = ln(xy) and the point (1, e), first we can take the derivative implicitly.

Using the chain rule and the fact that the derivative of ln(x) is 1/x, we have 3x2dx = (1/y + x/y')dx. Simplifying this gives y' = (3x2y - 1)/x, which is the derivative of the equation and represents the slope at any given point.

Substituting x = 1 and y = e into the equation of the derivative, we get y' = (3.1e - 1)/1 = 2e, so the slope at the point (1, e) is 2e.

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