For Exercise 1 through 7, do a complete regression analysisby performing the following steps.
a.Draw the scatterplot.
b.Compute the valueof the correlation coefficient.
c.Test thesignificance of the correlation coefficient at α = 0.01,using Table I or use the P-value method.
d.Determine theregression line equation if r is significant.
e.Plot theregression line on the scatter plot, if appropriate.
f.Predicty′ for a specific value of x, if appropriate.
3.PuppyCuteness and Cost A researcher feels that a pet storebases the cost of puppies on the cuteness of the animals. Eightpuppies were rated on their cuteness. The ratings were from 1 to 6,with 6 being the highest rating. The ratings and the cost indollars of the puppies are shown. Is there a significantrelationship between the variables? Please do by hand andshow 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:Ï â‰ 0; r = 0.761; C.V. = ±0.834; d.f. = 6; do notreject. There is not a significant linear relationship between therating and the cost. No regression analysis should be done.P = 0.0284
