The heights of women aged 20 to 29 are approximately normal with mean 64 inches and standard deviation 2.7 inches. men the same age have mean height 69.3 inches with standard deviation 2.8 inches. what are the z-scores for a woman 6 feet tall and a man 6 feet tall? what information do the z-scores give that the actual heights do not?

Answers

Answer 1
To find the z-scores, find the difference in the number of inches for each value from the mean and then divide that by the standard deviation. For women at 72 inches (6'), this would be (72-64) / 2.7, or a z-score of +2.963. For a male at 72 inches, this would be (72-69.3)/2.8, or +0.964. This shows that the woman at 6 feet tall is more rare in the distribution than a man at 6 feet tall.

Related Questions

"suppose that the dollar cost of producing x radios is c(x) = 200 + 10 x - 0.2 x 2 . find the average cost per radio of producing the first 30 radios"

Answers

Final answer:

To find the average cost per radio of producing the first 30 radios, divide the total cost of producing the first 30 radios by 30. The average cost per radio is $10.67.

Explanation:

To find the average cost per radio of producing the first 30 radios, we need to divide the total cost of producing the first 30 radios by 30. The total cost function is given as c(x) = 200 + 10x - 0.2x^2, where x represents the number of radios produced. Plugging in x = 30 into the function, we get c(30) = 200 + 10(30) - 0.2(30^2) = 200 + 300 - 180 = 320.

Therefore, the total cost of producing the first 30 radios is $320. To find the average cost per radio, we divide the total cost by the number of radios: $320 / 30 = $10.67.

The number of people contacted at each level of a phone tree can be represented by f(x) = 3x, where x represents the level.

What is x when f(x) = 27?

Answers

Answer:

Option B is correct

x= 3, At level 3, 27  number of people contacted

Step-by-step explanation:

As per the given statement:

The number of people contacted at each level of a phone tree can be represented by:

[tex]f(x) = 3^x[/tex]

where, x represents the level.

We have to find the value of x when f(x) = 27.

⇒27 = 3^x

We can write 27 as:

[tex]27 = 3 \times 3 \times 3 = 3^3[/tex]

then;

[tex]3^3 = 3^x[/tex]

on comparing we have;

3 = x

or

x = 3

Therefore, the value of x is, 3.

What is x in 6x=2x+40

Answers

Simplifying 6x = 2x + 40 Reorder the terms: 6x = 40 + 2x Solving 6x = 40 + 2x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2x' to each side of the equation. 6x + -2x = 40 + 2x + -2x Combine like terms: 6x + -2x = 4x 4x = 40 + 2x + -2x Combine like terms: 2x + -2x = 0 4x = 40 + 0 4x = 40 Divide each side by '4'. x = 10
so the answer is x = 10
6x=2x+40
subtract 2x from both sides

4x=40
divide both sides by 4 

x=10

A coffee pot holds 2 3/4 quarts of coffee. How much is this in cups?

Answers

the answer  is 11 us cups


free-falling body: h = -15t + 1/2at^2 + 5 (Solve for a)

Answers

When a body is said to be in a state of free fall, therefore this means that the only force associated with it is gravity. Gravity imposes an acceleration of about 9.81 m/s^2. Therefore we do not need to calculate for a, since a = g. (g = acceleration due to gravity)

 

a = 9.81 m/s^2

243.875 round to the nearest hundred

Answers

243.88 this is the answer because you are rounding the number in the hundreds collumn
I'd say 300... Then again I could be wrong

Remove the parentheses from the following expression and combine like terms. 3(ax + b2 - c) + 2

Answers

To remove the parentheses, you just distribute. 
So, it will become 3ax + 3b^2 - 3c +2. I don't think there is any like term in this expression. 

Answer:

[tex]3ax+3b^2-3c+2[/tex]

Step-by-step explanation:

We have been given an expression [tex]3(ax+b^2-c)+2[/tex]. We are asked to remove the parenthesis and combine like terms for our given expression.

Using distributive property [tex]a(b+c)=ab+ac[/tex], we will get:

[tex]3*ax+3*b^2-3*c+2[/tex]

[tex]3ax+3b^2-3c+2[/tex]

We can see that our given expression don't have like terms, therefore, our expression would be [tex]3ax+3b^2-3c+2[/tex].

A line passes through the point(4,-1) and (2,3). What is the slope of the line

Answers

Slope is found using the equation (y2-y1)/(x2-x1)
So we can plug the numbers into the equation

(-1)-3/ 4-2
(-1)-3= -4
4-2=2 

The equation is now -4/2
-4/2= -2

So the slope of the line is -2

Which can also be written as y=-2x

I have 140 markers. how many boxes of 10 markers does I need to get 180 markers

Answers

10 more boxes of markers

which of the following is the missing side length that completes Pythagorean triple below

Answers

Pythagorus Theorm
a sqr + b sqr = c sqr
25 sqr + 7 sqr = c sqr
625 + 49 = c sqr
625 + 49 = 674

c = sqr root of 674
c = 25.96 (rounded to 2dp)
the hypotenuse length is 25 and the length of one of the sides is 7.

According to the Pyth. Thm., 25^2 = 7^2 + s^2, or 625-49 = s^2.

The missing side length is s = sqrt(576) = 24.  (Omit s = -24).

Ian is 10 years old, how many candles has Ian had on all of his birthday cakes. Remember he has had 10 cakes

Answers

if he had a number of candles based on how old he was turning i would say he had 55 candles 

Add integer help just explain

Answers

Since -6 +6 can be rearranged to 6-6 using the communicative property, we get 6-6 =0 . In addition, -120+(-6) is essentially having -120+ 1*(-6), and 1 times a number is simply that number, so we have -120-6=-126

 need help with this

Answers

(450-210)/4+50=110

 hope this helps

$70. Because first he had $450 then he spends $210 (450-210= 240) which he is left with $240
After that he divided the money (240/4=60) which gives him $60, then he distributed 3 (60-30=20 or 60/3=20).
he then finds $50 on the road (50+20=70) which he now has $70.


The answer is $70

Factor the polynomial x^9-y^12

Answers

(X^3)^3- (y^4)^3

Use formula: (a-b) (a^2+ab +b^2)

User power rule: (x^a)^b=x^ab
(X^3_4^4)(x^6+x^3y^4+ (y^4)^2)

(X^3-y^4)(x^6+x^3y^4+y^8)

From examples 9 and​ 10, what is the connection between function notation to evaluate a function at certain values and ordered pair solutions of the​ function?

Answers

what are examples 9 and 10?

Function notation and ordered pair solutions of a function are closely connected. Function notation is a way to represent a function by its name and its input value, while an ordered pair solution of a function is a pair of numbers (x, y) such that y is the output of the function when x is the input.

To evaluate a function using function notation, we simply substitute the input value into the function's expression. For example, if the function is f(x) = x^2, then to evaluate f(2), we would substitute 2 into the function's expression:

f(2) = 2^2 = 4

This means that the ordered pair solution (2, 4) is a solution of the function f(x) = x^2.

In general, any ordered pair solution of a function can be evaluated using function notation. For example, if the function is g(x) = 2x + 1, and the ordered pair solution is (3, 7), then we can evaluate g(3) as follows:

g(3) = 2(3) + 1 = 6 + 1 = 7

This confirms that the ordered pair solution (3, 7) is a solution of the function g(x) = 2x + 1.

Conversely, any function value can be represented as an ordered pair solution of the function. For example, if the function is h(x) = x^3, and the function value is 8, then we can represent this as the ordered pair solution (2, 8), since h(2) = 8.

In general, any function value can be represented as an ordered pair solution of the function by writing the input value as the first coordinate and the function value as the second coordinate.

Therefore, function notation and ordered pair solutions of a function are closely connected. Function notation is a way to represent a function and its input value, while an ordered pair solution of a function is a pair of numbers (x, y) such that y is the output of the function when x is the input. Any function value can be evaluated using function notation, and any ordered pair solution of a function can be represented as a function value.

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The following question may be like this:

What is the connection between function notation to evaluate a function at certain values and ordered pair solutions of the​ function?

The average time a boulder high varsity lacrosse player plays in a game is 30 minutes with a standard deviation of 7 minutes. nolan’s playing time in last week’s game against fairview was 48 minutes. (a) calculate the z-score for nolan’s playing time against fairview. (round your answer to 2 decimal places.)

Answers

Solving this problem is pretty straight forward.

We simply use the formula:

z-score = (x – u) / s

 

where,

x = sample value = 48 minutes

u = mean value = 30 minutes

s = standard deviation = 7 minutes

 

Therefore,

z-score = (48 minutes – 30 minutes) / 7 minutes

z-score = 2.57

Final answer:

To calculate Nolan's z-score for playing time against Fairview, use the given formula. Nolan's z-score for this game is 2.57.

Explanation:

A: To calculate the z-score for Nolan's playing time against Fairview, use the formula: z = (x - μ) / σ, where x is Nolan's playing time, μ is the average time, and σ is the standard deviation.

B: Substituting the values, z = (48 - 30) / 7 = 2.57. Therefore, Nolan's z-score for playing time against Fairview is 2.57.

given: f(x)=4x^2-5
find: f(5)=

Answers

This question is basically asking you to plug in 5 as x:

f(x) = 4x^2 - 5
f(5) = 4(5)^2 - 5
f(5) = 4(25) - 5
f(5) = 100 - 5
f(5) = 95

Hope this helps!

Find the area of the region bounded by the parabola y=2x^2 , the tangent line to the parabola at (5,50), and the x-axis

Answers

check the picture below.

so.. the graph looks like so, since the tangent line is at 5,50, it touches the parabola when y = 50, x = 5.

so, let's get the tangent line at that point,

[tex]\bf y=2x^2\implies \left. \cfrac{dy}{dx}=4x \right|_{x=5}\implies 20\leftarrow m \\\\\\ y-y_1=m(x-x_1)\implies y-50=20(x-5)\implies y=20x-50\\ \left. \qquad \right. \uparrow\\ \textit{point-slope form}[/tex]

since I don't see an Up/Down function, just a Right/Left one... so, we'll use the function in "y-terms" then, the second one in the graph for each.

now... to get the bounds.... we could make them equal to each other, however, we know that the x-axis( y = 0) is the boundary line at the bottom, and that the tangent line is touching the parabolat a y = 50, thus, our bounds are from 0 to 50.

[tex]\bf \begin{cases} \cfrac{y+50}{20}=x\impliedby \textit{right function}\\\\ \sqrt{\cfrac{y}{2}}=x\impliedby \textit{left function} \end{cases} \\\\\\ \displaystyle \int\limits_{0}^{50}~\left[ \left( \cfrac{y+50}{20} \right)~-~\left( \sqrt{\cfrac{y}{2}}\right) \right]dy \\\\\\ \displaystyle \cfrac{1}{20}\int\limits_{0}^{50}~y\cdot dy+\int\limits_{0}^{50}~\cfrac{5}{2}\cdot dy-\cfrac{1}{\sqrt{2}}\int\limits_{0}^{50}~y^{\frac{1}{2}}\cdot dy[/tex]

[tex]\bf \left. \cfrac{y^2}{40}+\cfrac{5y}{2}-\cfrac{2\sqrt{y^3}}{3\sqrt{2}} \right]_{0}^{50}\implies \left[ \cfrac{250}{4}+125-\cfrac{500\sqrt{2}}{3\sqrt{2}} \right]-[0] \\\\\\ \cfrac{375}{2}-\cfrac{500}{3}\implies \cfrac{125}{6}[/tex]
Final answer:

The area of the region bounded by the parabola[tex]y=2x^2[/tex]angent line at (5,50), and the x-axis is found by integrating the function of the parabola, finding the x-intercept of the tangent line, and subtracting the area under the tangent line from the area under the parabola between x=0 and x=5.

Explanation:

The area of the region bounded by the parabola , the tangent line at the point (5,50), and the x-axis can be found using integral calculus. First, we find the equation of the tangent line to the parabola at (5,50). The derivative of y with respect to x is given by [tex]y=2x^2[/tex]= 4x. At x=5, the slope of the tangent line is 20. Thus, the equation of the tangent line is y - 50 = 20(x - 5). To find the bounded area, we integrate the area under the parabola from the x-intercept of the tangent line to x=5, and subtract the area under the tangent line in the same interval.

Let's call the x-intercept of the tangent line x1. To find x1, we set the y-value of the tangent line equation to 0 and solve for x. The integration itself uses the antiderivative of  which is [tex]2x^2,[/tex] and the antiderivative of the linear tangent line equation. Subtracting the integral of the tangent line from the integral of the parabola gives us the exact area under the parabola.

Which of the following is a solution for the inequality 2x < 9?

Answers

the answer is x<9/2
hope it helps

How many solutions does the equation have? 3+x=2–3x

Answers

it has two equation because of the equal sign 
zero solution:

3 + x = 2 - 3x
3x + x = -3 + 2

4x = -1

x = -1/4


hope this helps

The graphs of the function FF (left, in blue) and GG (right, in red) are below. Let P(x)=F(x)G(x)P(x)=F(x)G(x) and Q(x)=F(x)/G(x).Q(x)=F(x)/G(x). Answer the following questions.

Answers

Final answer:

The problem involves understanding relationships between functions F(x) and G(x), achieved by creating new functions P(x) as their product and Q(x) as their quotient, and studying their behavior for different values of x.

Explanation:

The subject of the question deals with understanding the relationship between two functions, F(x) and G(x), through creating new functions P(x) and Q(x). P(x) is defined as the product of F(x) and G(x), while Q(x) represents the division of F(x) by G(x).

One way to explore the nature of these new functions would be to take particular values of x, calculate the corresponding outputs for F and G, and then apply the definitions of P and Q. For instance, if F(1)=2 and G(1)=3, then P(1)=F(1)G(1)=2*3=6 and Q(1)=F(1)/G(1)=2/3. Through these examples we can get a grasp of how these functions behave. Comparing P(x) and Q(x) across a number of x-values also provides insight into their relative behavior and interplay.

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The total cost of a tie and a pair of of pants was$87.76. If the price of the tie was $5.64 less than the pair of pants, what was the price of the tie? Express your answer as a simplified fraction or a decimal rounded to two places.

Answers

let t = the cost of the tie and p = the cost of the pants
t + p = 87.76
We know the cost of the tie (t) is equal to 5.64 less than the pants then we can write:
t = p-5.64
Substitute back into the original equation
(p-5.64)+p=87.76
2p= 93.4
p=46.7
Substitute p back into the original equation
t+46.7= 87.76
t=41.06
We can verify this is true by adding them back together to get 87.76.

Answer:788

Step-by-step explanation:

think about a real world example of where a wall meets the floor and where the same wall meets the ceiling. which term describes the edge of the floor and the edge of the ceiling?

A. Parallel line segments
B. Perpendicular line segments
C. Right angle
D. Acute angle

Answers

the answer for your question would be answer c right angle 
The right angle is the answer

What number represents the most accurate estimation of 65+77

Answers

140 would be the answer. This is because the real answer is 142 you round down to get the estimated answer
the answer is 142. that's the answer.

Simplify 72 - 81 - 10 + 4

Answers

I think your answer is -15
10 +4=14 
then subtract 81 to 72 which =9
9+14 gives you 23

Seven less than four times a number is 35. Whats a number?

Please explain-a)7;b)21/2;c)-7;d)-21/2

Answers

4N-7 = 35

4N = 42

N = 42/4 = 10.5

10.5 = 21/2

B 21/2  is the answer

What is 378×6 using place value with regrouping

Answers

Hello! To solve this problem, you can regroup this by multiplying the bottom digit by top digit. 6 * 8 is 48. From the 8 and carry your 4. 6 * 7 is 42 plus 4 is 46. Drop the 6 and carry your four. 6 * 3 is 18 plus 4 is 22. When combined, the product is 2,268. The product of 378 * 6 using place value with regrouping is 2,268.

How much greater is 98×50 than 97×50 with actual calculating it

Answers

98 is greater than 97 so 98x50 is greater than 97x50

Which expression results when the change of base formula is applied to log4(x+2) ?

Answers

The change of base formula is the wanted/current.

So it would be log(x+2)/log4.

The answer is the first one.

Answer:

Option A : [tex]\frac{log(x+2)}{log(4)}[/tex]

Step-by-step explanation:

Write the expression when the change of base formula is applied to log4(x+2

Given [tex]log_4(x+2)[/tex]

USe change of base formula

[tex]log_b(a)= \frac{log(a)}{log(b)}[/tex]

WE apply change of base formula for the given log

the base of log becomes the denominator .

Numerator becomes the x+2

[tex]log_4(x+2)= \frac{log(x+2)}{log(4)}[/tex]

option A is the correct answer

which values are equivalent to the fraction below 3^6/3^8

Answers

[tex] \frac{3^{6}}{3^{8}} = 3^{6-8} = 3^{-2} = \frac{1}{ 3^{2} } = \frac{1}{9} [/tex]
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