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For Exercise 1 through 7, do a complete regression analysis by performing the following steps. a.Draw...

For Exercise 1 through 7, do a complete regression analysis by performing the following steps.

a.Draw the scatter plot.

b.Compute the value of the correlation coefficient.

c.Test the significance of the correlation coefficient at α = 0.01, using Table I or use the P-value method.

d.Determine the regression line equation if r is significant.

e.Plot the regression line on the scatter plot, if appropriate.

f.Predict y′ for a specific value of x, if appropriate.

3.Puppy Cuteness and Cost A researcher feels that a pet store bases the cost of puppies on the cuteness of the animals. Eight puppies were rated on their cuteness. The ratings were from 1 to 6, with 6 being the highest rating. The ratings and the cost in dollars of the puppies are shown. Is there a significant relationship between the variables? Please do by hand and show work.

Rating

6

2

1

4

5

2

3

4

Cost

$80

$42

$27

$64

$50

$39

$18

$44

Answer: 3.H0: p = 0; H1: ρ ≠ 0; r = 0.761; C.V. = ±0.834; d.f. = 6; do not reject. There is not a significant linear relationship between the rating and the cost. No regression analysis should be done. P = 0.0284

Solutions

Expert Solution

a) The scatter plot

milcah answered 1 year ago
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