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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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The odds would be 1/2. Yes/no
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3 years ago
Heather has a rectangular yard. She measures it and finds out it is 24 1/2 feet long by 12 4/5 feet wide. She wants to know how
noname [10]

Answer:

313.6 sqft.

Step-by-step explanation

Decimal

First, convert the fractions into decimals to make it easier to multiply. 24 1/2 = 24.5. 12 4/5 = 12.8. 24.5*12.8 = 316.6.

Fraction

First, make the fractions into improper fractions. 24 1/2 = 49/2. = 12 4/5 = 64/5. 49/2*64/5 = 313 3/5 = 313 6/10 = 313.6.

6 0
2 years ago
Complete the table for the given rule
irinina [24]

Answer:

see explanation :)

Step-by-step explanation:

y = − x − 4

is in the slope-intercept form for a linear equation,  

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m = − 1  and  b = − 4 .


Ordered Pairs

x ... ... . . y

4 ... . − 8

2 ... . − 6

0 ... . − 4

− 2 . ...− 2

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7 0
3 years ago
Read 2 more answers
What is (x-10)+(3x-6)
ruslelena [56]
Hi Jessica

(x - 10) + (3x - 6)
Eliminate the parenthesis
x - 10 + 3x - 6
Combine like terms
x + 3x - 10 - 6
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I hope that's help ! 

6 0
3 years ago
Read 2 more answers
What is the step by step to solved a divide decimal 1.52 divide by 1.9
lora16 [44]

ANSWER

0.8

EXPLANATION

We want to simplify

1.52 \div 1.9

We convert the decimals to fractions

\frac{152}{100}   \div  \frac{19}{10}

We multiply by the reciprocal of the second fraction.

\frac{152}{100}   \times \frac{10}{19}

\frac{19 \times 8}{100}   \times \frac{10}{19}

Cancel the common factors to obtain,

\frac{8}{10}  =  0.8

8 0
4 years ago
Read 2 more answers
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