The nurse researcher is reading about linear regression. what is linear regression

Answers

Answer 1
Hello there.

   Linear regression is a useful tool that allows calculating approximate values for a function that passes through given points(with the best error possible). It is very useful in science to make an estimation of the comportment of movement, electricity and some decays.

   For example, I will relate a case in a physics lab: We calculated the positions of a car in an air rail and the times. With this information, I was able to make a linear regression to calculate the Position function for that case.
Answer 2
It is a linear approach for modeling the relationship between a scalar dependent variable and one or more explanatory variables denoted x.

Related Questions

In your own words, explain the place value relationship when the same two digits are next to each other in a multi digit number.

Answers

i would help if i was smart.


The campsite shop sells boxes of Funshine Cereal.

The base of each box is a 180 mm x 60 mm rectangle.

The shelf where the boxes are displayed is a 65 cm x 35 cm rectangle.
Work out the maximum number of boxes that will fit on the shelf.

Answers

there are 10 mm in 1 cm, so 180 mm is really just 18cm and 60 mm is just 6cm.

so how much area each box's base takes up?   18x6 centimeters, or 108cm.

the shelf is a 65x35 so is 2275 centimeters in available area.

how many times does 108 go into 2275?  well, 2275/108, that many would fit in the shelf

Answer:D 3,888

Step-by-step explanation:

Lana earned $49on friday $42 on saturday,and $21 on sunday selling bracelets she sold each bracelet for the same amount what is the most she could have charged for eac bracelet?

Answers

$7 because all you have to do is find the greatest common denominator. Which is 7. 7 is the greatest common denominator in the bunch. 7 goes into 21, 42, 49.
Answer:

The most amount she could have charged for each bracelet is:

                            $ 7

Step-by-step explanation:

It is given that:

Lana earned $49 on Friday $42 on Saturday,and $21 on Sunday selling bracelets.

Also, she sold each bracelet for the same price.

This means that if the maximum cost of each bracelet will be the greatest common divisor i.e. G.C.D. of the amount she earned each day.

which is G.C.D(49,42,21)=7

Hence, the answer is: $ 7

Suppose that coin 1 has probability 0.7 of coming up heads, and coin 2 has probability 0.6 of coming up heads. if the coin flipped today comes up heads, then we select coin 1 to flip tomorrow, and it if comes up tails, then we select coin 2 to flip tomorrow. if the coin initially flipped is equally likely to be coin 1 or coin 2. what is the probability that the coin flipped after four transitions is coin

Answers

Answer:

C. 3/8

Step-by-step explanation:

Based on the empirical rule, what percent of the observations will lie between plus or minus two standard deviations from the mean

Answers

Empirical rule for asymmetrical, chime formed recurrence conveyance, around 68% of the perceptions will exist in addition to and short one standard deviation of the mean; around 95% of the perceptions will exist in addition to and less two standard deviations of the mean; and for all intents and purposes every one of the (99.7%) will exist in addition to and less three standard deviations of the mean.

Segment MN has endpoints at M(2,5) and N(-4,3). What is the midpoint of the segment?

Answers

Final answer:

To find the midpoint of segment MN, we can use the midpoint formula which states that the coordinates of the midpoint are the average of the x-coordinates and the average of the y-coordinates of the endpoints. Using this formula, we find that the midpoint of segment MN is (-1, 4).

Explanation:

To find the midpoint of the segment MN, we can use the midpoint formula. The midpoint formula states that the coordinates of the midpoint are the average of the x-coordinates and the average of the y-coordinates of the endpoints.

Let's calculate the x-coordinate of the midpoint:

x-coordinate = (x1 + x2) / 2 = (2 + (-4)) / 2 = -2 / 2 = -1.

Now, let's calculate the y-coordinate of the midpoint:

y-coordinate = (y1 + y2) / 2 = (5 + 3) / 2 = 8 / 2 = 4.

Therefore, the midpoint of segment MN is (-1, 4).

Final answer:

The midpoint of the segment MN with endpoints M(2,5) and N(-4,3) is (-1, 4).

Explanation:

To find the midpoint of a segment, we can use the midpoint formula. The midpoint formula states that the x-coordinate of the midpoint is the average of the x-coordinates of the endpoints, and the y-coordinate of the midpoint is the average of the y-coordinates of the endpoints.

For segment MN with endpoints M(2,5) and N(-4,3), we can calculate the x-coordinate of the midpoint by averaging the x-coordinates:

(2 + (-4)) / 2 = -1

And we can calculate the y-coordinate of the midpoint by averaging the y-coordinates:

(5 + 3) / 2 = 4

Therefore, the midpoint of segment MN is (-1, 4).

Which of the following is a factor of x^3-4x^2-18x+9

Answers

(x-2)(x^2-7x+3) most likely

Hello,

[tex]x^3-4x^2-18x+9\\ =x^3+3x^2-7x^2-21x+3x+9\\ =x^2(x+3)-7x(x+3)+3(x+3)\\ =(x+3)(x^2-7x+3)\\ =(x+3)(x- \frac{7- \sqrt{37}}{2} )(x- \frac{7+ \sqrt{37}}{2} )[/tex]

Find all real solutions
2x² + 4x + 1 = 0

Answers

This quadratic polynomial is unable to be factored, so we'll need to use the quadratic formula:
[tex]x=\frac{-b\pm \sqrt{(b^{2})-4ac}}{2a}[/tex]

Here a=2, b=4, c=1 so:
[tex]x=\frac{-4\pm \sqrt{(4^{2})-4*2*1}}{2*2}[/tex]

If you need help from there, let me know.

18+27 write the sum of the numbers as the product of their GCF and another sum

Answers

ghhfbdnxndnxnxnxxnxnxnbxbzbzbbxbx

Find all real zeros of the function y=-9x-1

Answers

For zeros of the function (y is the function, a function of x) we need y = 0 so that in turn means we need - 9x - 1 = 0 or - 9x = 1 (i.e. add 1 to both sides); now divide by - 9, and x = 1/-9 which is exactly the same as - 1/9 or - (1/9) and this is the only zero of the function.

or   

If y = -9x - 1, 

When y = 0 
0 = -9x - 1 
0 + 1 = -9x - 1 + 1 
1 = -9x 
1/9 = -9x/9 
1/9 = -x 
1/[9 X (-1)] = -x/-1 
- (1/9) = x 

When x = 0 
y = (-9 X 0) - 1 
y = 0 - 1 
y = - 1

Answer:

B.- 1/9

Step-by-step explanation:

how to find domain and range in a graph and will give the bainliest to whoever explains to me on how to do it.

Answers

To find the domain of a graph observe the intervals of x that the line touches, and make an inequality of it. Same for the range but it's for the intervals of y. If the graph goes forever, then include "infinity" on the inequality

Cindy was asked by her teacher to subtract 3 from a certain number and then divide the result by 6. Instead, she subtracted 6 and then divided the result by 3, giving an answer of 35. What would her answer have been is she had worked the problem correctly?

Answers

she subtracted 6 from a certain number and then divided the result by 3, giving her 35.

(x - 6) / 3 = 35
x - 6 = 35*3
x - 6 = 105
x = 105 + 6
x = 111

so she should have subtracted 3, then divided by 6
(111 - 3) / 6 = 108/6 = 18 <===
Taking the answer 35 multiplying it by 3 and adding 6 would give the original number chosen.
(35 × 3) - 6 = 111
Original number chosen is 111.
Now perform the correct operations.
111 - 3 = 108
108 ÷ 6 = 18
The correct answer is 18

Hope it helped!

You use your mobile phone to phone home every day. It costs $15 per month and 18c per minute for phone calls. 

How much will you have to pay for 420 minutes of calls including the monthly charge?

Answers

420 x 18c= 75.60
+15.00
=90.60

A trapezoid has an area of 20 cm2 and a height z cm. The lengths of the parallel sides are (2z + 3) cm and (6z – 1) cm. Find the height, z, of the trapezoid. In your final answer, include all of the formulas and calculations necessary.

Answers

check the picture below.

[tex]\bf A=\cfrac{h(a+b)}{2}\quad \begin{cases} A=20\\ a=6z-1\\ b=2z+3\\ h=z \end{cases}\implies 20=\cfrac{z[(6z-1)~+~(2z+3)]}{2} \\\\\\ 20=\cfrac{z(8z+2)}{2}\implies 20=\cfrac{2z(4z+1)}{2}\implies 20=z(4z+1) \\\\\\ 20=4z^2+z\implies 0=4z^2+z-20[/tex]

[tex]\bf \qquad \qquad \textit{quadratic formula}\\\\ \begin{array}{llccll} 0=&{{ 4}}z^2&{{ +1}}x&{{ -20}}\\ &\uparrow &\uparrow &\uparrow \\ &a&b&c \end{array} \qquad \qquad z= \cfrac{ - {{ b}} \pm \sqrt { {{ b}}^2 -4{{ a}}{{ c}}}}{2{{ a}}} \\\\\\ z=\cfrac{-1\pm\sqrt{1+320}}{8}\implies z=\cfrac{-1\pm\sqrt{321}}{8}\implies z\approx \begin{cases} \boxed{2.1146}\\ -2.3646 \end{cases}[/tex]

since the height is just a length unit, it can't be -2.3646.

Answer:

2.11 cm

Step-by-step explanation:

As you can see in the picture I put the sides in the trapezoid. Now, let's use the area's formula:

A = [tex]\frac{(B+b)*h}{2}[/tex]

where B is the Largest parallel side, b the smallest parallel side and h is the height.

Now,

20 =  [tex]\frac{(6z-1+2z+3)*z}{2}[/tex]

20 =  [tex]\frac{(8z^{2}+2z}{2}[/tex]

20 = [tex]4z^{2}+z[/tex]

[tex]4z^{2}+z-20=0[/tex]

Then, we use the cuadratic formula z= [tex]\frac{-b+-\sqrt{b^{2}-4ac} }{2a}[/tex] where a=4, b=1 and c=-20.

z= [tex]\frac{-1+-\sqrt{1-4(4)(-20)} }{8}[/tex]

z =  [tex]\frac{-1+-\sqrt{1+320} }{8}[/tex]

z =  [tex]\frac{-1+-\sqrt{1+320} }{8}[/tex]

z =  [tex]\frac{-1+-17.91}{8}[/tex]

As we are searching lenght we choose the positive z value

z =  [tex]\frac{-1+17.91}{8}[/tex]

z=  [tex]\frac{16.91}{8}[/tex]

z =  2.11 cm.

Which of the following is not considered one of the four basic types of auto insurance? a. Collision b. Bodily Injury c. Property Damage d. Legal Responsibility

Answers

Answer:

d. Legal Responsibility

Step-by-step explanation:

When purchasing auto insurance, "full coverage" insurance will include:

Collision coverage;

Bodily Injury coverage;

Property damage coverage;

and Comprehensive coverage.

Legal Responsibility is not one of these major types.

Legal Responsibility is not considered as the component of auto insurance because auto insurance only consists of collision, bodily injury, medical payment or personal injury protection and property damage liability. Therefore option (d) is correct.

Further Explanation:

Auto Insurance: It is a contract between two parties of which is the insurer, and the other one is insured. An insurer is a person who agrees to pay the insured in any unforeseen circumstances like accidents, thefts, property damage, etc. In case of auto insurance, the insurance company takes the responsibility of all the damages which are done to the holder of the auto or the auto, but it does not take the responsibility of any legal damage to the insured.

Learn more:

1.   Learn more about health care insurance

https://brainly.com/question/7325538

2.      Learn more about the insurance rules

https://brainly.com/question/6075135

3.      Learn more about the insurance cover

https://brainly.com/question/1362335

Answer details:

Grade: Senior School

Subject: Business Studies

Chapter: Insurance

Keywords: Insurance, collision, bodily injury, insurance claims, legal responsibility, property damage, types of auto insurance, auto insurance, the insurance company, responsibility, damages, holder of the auto, legal damage to the insured, basic type of auto insurance, contract, between two parties, insurer, who agrees to pay, the insured.

Find the additive inverse of each number. 1. 15 2. – 27 3. 7 9 4. 9 16  5. 0 6. – 1

Answers

The additive inverse of a number is otherwise known as its opposite.

The additive inverse of 15 is -15.
The additive inverse of -27 is 27.
The additive inverse of 0 is 0 itself!

a + (-a) = 0
A number plus its additive inverse equals zero!

A trip from new york to seattle is 2852.1 miles. A family wants to make the drive in ten days, driving the same number of miles each day. About how many miles will they drive each day? Round your answer to the nearest tenth of a mile.

Answers

2852.1 divided by 10=285.21
They will drive 285.2 miles every day

Answer:

285.2 miles per day.

Step-by-step explanation:

We have been given that a trip from New York to Seattle is 2852.1 miles. A family wants to make the drive in ten days.

To find the distance traveled by the family each day, we will divide total distance by 10 as:

[tex]\text{Distance traveled by the family each day}=\frac{2852.1\text{ miles}}{\text{ 10 days}}[/tex]

[tex]\text{Distance traveled by the family each day}=\frac{285.21\text{ miles}}{\text{day}}[/tex]

[tex]\text{Distance traveled by the family each day}\approx \frac{285.2\text{ miles}}{\text{day}}[/tex]

Therefore, the family will drive 285.2 miles per day.

what is the height of a box with a volume of 50 cubic meters, length of 10 meters, and which of 2 meters

Answers

h = v over l (w)
so 50 divided by 20
= 2.5
the answer is 2.5 alright

Select all that apply. (xyz)2 = _____ The expression without exponents is?

Answers

(xyz)² = x.x.y.y.z.z. This is this expression without exponents

How many terms are in the arithmetic sequence 9, 2, −5, . . . , −187?

Answers

9, 2, -5... so is going down by 7 each time, meaning the "common difference" is -7.

[tex]\bf n^{th}\textit{ term of an arithmetic sequence}\\\\ a_n=a_1+(n-1)d\qquad \begin{cases} n=n^{th}\ term\\ a_1=\textit{first term's value}\\ d=\textit{common difference}\\ ----------\\ a_1=9\\ d=-7\\ a_n=-187 \end{cases} \\\\\\ -187=9+(n-1)(-7)\implies -187=9-7n+7 \\\\\\ 7n=9+7+187\implies 7n=203\implies n=\cfrac{203}{7}\implies \boxed{n=29}[/tex]

Final answer:

To find the number of terms in the arithmetic sequence 9, 2, −5, ..., −187, the formula for the nth term of an arithmetic sequence is used with the first term a1, common difference d, and the last term an. By solving an = a1 + (n - 1)*d for n, it is found that there are 29 terms in the sequence.

Explanation:

To determine how many terms are in the arithmetic sequence 9, 2, −5, ..., −187, we use the formula for the nth term of an arithmetic sequence:
an = a1 + (n - 1)*d where,
a1 is the first term,
d is the common difference, and
n is the number of terms.

For the given sequence:

a1 = 9 (the first term)

d = 2 - 9 = -7 (the common difference)

an = −187 (the last term)

We need to find the value of n that satisfies:

−187 = 9 + (n - 1)*(-7)

Solving for n gives us:

−187 - 9 = (n - 1)*(-7)

n - 1 = 28/7

n = 28 + 1

n = 28 + 1

n = 29

Therefore, there are 29 terms in the arithmetic sequence.

3-i/1+i please answer in a +bi form

Answers

now... let's multiply the denominator and numerator by the conjugate of the denominator as already suggested, which is just the same, but with a different sign in the middle, 1 - i.


[tex]\bf \textit{difference of squares} \\ \quad \\ (a-b)(a+b) = a^2-b^2\qquad \qquad a^2-b^2 = (a-b)(a+b) \\\\\\ \textit{also recall that }\qquad i^2=(\sqrt{-1})(\sqrt{-1})\implies i^2=-1\\\\ -------------------------------\\\\[/tex]

[tex]\bf \cfrac{3-i}{1+i}\cdot \cfrac{1-i}{1-i}\implies \cfrac{(3-i)(1-i)}{(1+i)(1-i)}\implies \cfrac{(3-i)(1-i)}{(1^2)-(i^2)} \\\\\\ \cfrac{3-3i-i+i^2}{1^2-(-1)}\implies \cfrac{3-3i-i+(-1)}{1+1}\implies \cfrac{3-1-3i-i}{2} \\\\\\ \cfrac{2-4i}{2}\implies \cfrac{\underline{2}(1-2i)}{\underline{2}}\implies 1-2i[/tex]

What is 8.478 in expanded form

Answers

8 ones 4 tenths 7 hundredths and 8 thousandths

The large rectangle's dimension are three times the dimensions of the small rectangle.

Answers

The dimensions of the larger rectangle will be three times the dimensions of the smaller rectangle.

How much heavier is a 9 1/8 pound box than a 2 5/6 pound box

Answers

9 1/8 - 2 5/6 = 6  7/24

You are creating identical picnic baskets using 30 sandwhiches and 42 cookies. What is the greatest number of baskets that you can fill using all of the food?

Answers

Here, you want to find the GCF, or the greatest common factor.

Simplest way to do this is by listing out all the factors.

30: 1, 2, 3, 5, 6, 10, 15, 30
42: 1, 2, 3, 6, 7, 14, 21, 42

So the greatest number that they share is 6.

So there would be 6 picnic baskets. (With 5 sandwiches and 7 cookies in each)
the answer would be 6 baskets with 7 cookies and 5 sandwiches in each basket

Please show the steps in solving B=5/7(F-38) solve for F

Answers

here's the answer for your problem

twelve times the sum of a number and 2 is equal to 36. what is the number

Answers

12(x+2)=36
12x+24=36
12x=12
x=1
12(x+2)=36
12x+24=36
-24. -24
12x=12
/12. /12
x=1

Which operation could we perform in order to find the number of milliseconds in a year? 60 * 60 * 24 * 7 * 365 1000 * 60 * 60 * 24 * 365 24 * 60 * 100 * 7 * 52 1000 * 60 * 24 * 7 * 52?

Answers

Use the following abbreviations:
y = year,
d = day,
h = hour,
min = minute,
s = second,
ms = millisecond.

Then
[tex]1 \, y = (1 \, y)*(365 \, \frac{d}{y} )*(24 \, \frac{h}{d} )*(60 \, \frac{min}{h} )*(60 \, \frac{s}{min} )*(1000 \, \frac{ms}{s} )[/tex]

Therefore, the correct calculation is
1000 * 60 * 60 * 24 * 365

Answer: 1000 * 60 * 60 * 24 * 365

Final answer:

To find the number of milliseconds in a year, multiply the number of milliseconds in a day by the number of days in a year: 86,400 seconds/day * 365 days/year * 1,000 milliseconds/second = 31,536,000,000 milliseconds/year.

Explanation:

To find the number of milliseconds in a year, we need to multiply the number of milliseconds in a day by the number of days in a year. There are 24 hours in a day, 60 minutes in an hour, and 60 seconds in a minute. So, there are 24 * 60 * 60 = 86,400 seconds in a day. And since there are 365 days in a year, we can calculate the number of milliseconds in a year as:

86,400 seconds/day * 365 days/year * 1,000 milliseconds/second = 31,536,000,000 milliseconds/year

Carlos finds the absolute value of -5.3, and then finds the opposite of his answer. Jason finds the opposite of -5.3 and then finds the absolute value of his answer. What final value is greater? EXPLAIN

Answers

The absolute value is how far away a number is from the number line, so it is always positive. If Carlos finds the opposite of the absolute value, that means he found the negative version. So Jason's final value will be greater.
Absolute value of -5.3  is 5.3.

The opposite of 5.3 is -5.3

Abslote value of this is 5.3

So the 2 values are the same.

If it costs 9.50 to buy a movie ticket what is the most number of tickets someone can buy for 40.00 and how much money is left over

Answers

4, and two dollars are left.
Four and two dollars
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