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padilas [110]
3 years ago
10

Noah testes several men of different ages to see how many push ups they could complete in a row without resting. An approximate

least squares regression line was used to predict the number of push ups from a given age of man
Mathematics
2 answers:
aev [14]3 years ago
7 0

Answer:

Estimator 'b' from sample regression function 'y = b0 + b1x + u' satisfies OLS, if Σu^2 = Σ (Y - y)^2 is minimum

Step-by-step explanation:

Regression shows the relationship between independent (causal) & dependent (effected) variables.

As per given case : Independent variable = men's are = x ; dependent variable = number of push ups = y

  • Population regression function [ PRF ] : Y | Xi = B0 + B1Xi
  • Sample (estimated) regression function [SRF] : y = b0 + b1x + u

OLS [Ordinary Least Square] model is a method used for finding linear regression parametes (b's), such that it minimises the sum of squared residuals. Residuals are the error terms between PRF actual value & SRF estimated value

So, b's from SRF are OLS estimators if, Σu^2 = Σ (Y - y)^2 is minimum

galina1969 [7]3 years ago
7 0

Answer:

This man completed 10 fewer push ups than predicted based on his age.

Step-by-step explanation:

Answer from Khan

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Paladinen [302]
3 1/2=7/2
4 5/6=29/6
7/2×29/6=203/12 or 16 11/12. Hope it help!
8 0
3 years ago
Read 2 more answers
???????? ?????? ?????
iris [78.8K]

Answer:

so 23.5+24.3+33.8=81.6

Step-by-step explanation:

81.6

7 0
3 years ago
a rectangle has a primeter of 200 ft the length is 4 more feet than the width find the dimensions of the rectangle
zysi [14]

The length and width of the given rectangle are 52 ft and 48 ft respectively.

<h3><u>Solution:</u></h3>

The relationship between the length and breadth is given as following:

The length is 4 more feet than the width

The perimeter of the rectangle is given as 200 ft.

The formula to find the perimeter of a rectangle is:

Perimeter = 2(length + width)

Let length and width of the rectangle be denoted as ‘L’ and ‘B’

The given relationship between length and width can be written in equation form as follows:

L = 4 + B ------ eqn 1

Substitute the value of "L" in perimeter of triangle

200 = 2(4 + B + B)

200 = 2(4 + 2B)

200 = 8 + 4B

4B = 192

B = 48

Since, we know the value of width lets substitute it in eq1 to find the length.

L = 4 + 48

L = 52

Therefore, the length and width of the given rectangle are 52 ft and 48 ft respectively.

7 0
3 years ago
Lola takes the train from Paris to Nice. The distance between the two cities is about 920,000 meters. If the train travels at a
Vlada [557]

First, you need to convert 920,000 meters to kilometers because the speed of the train is kilometer per hour, 920,000 meters is equal to 920 kilometers. Then, all you need to do left is take 920 (the distance from Paris to Nice in kilometer) and divide it by 230 (the speed of the train), so you will get 4. So you should write the answer like this: "The total time that took Lola to get from Paris to Nice is 4 hours."Hope this help you.


5 0
3 years ago
Write an equation of the line through the given points<br><br><br>(0, 4), (3, 3)​
andre [41]

Hello! :)

Step-by-step explanation:

Slope=\frac{Y_2-Y_1}{X_2-X_1}=\frac{RISE}{RUN}

\frac{3-4}{3-0}=\frac{-1}{3}=-\frac{1}{3}

<u><em>Therefore, the slope is -1/3.</em></u>

<u><em>-1/3 is the final answer.</em></u>

Hope this helps!

Have a nice day! :)

:D

-Charlie

Thank you!

4 0
3 years ago
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