Listed below are amounts of bills for dinner and the amounts of the tips that were left. Construct a scatterplot, find the value of the linear correlation coefficient r, and find the P-value of r. Determine whether there is sufficient evidence to support. of a = 0.01. If everyone were to tip with the same percentage, what should be the value of r? a claim of linear correlation between the two variables. Use a significance level Bill (dollars) Tip (dollars) 32.09 48.22 86.98 102.71 66.52 112.46 6.08 5.24 16.05 12.31 7.27 14.62
Listed below are amounts of bills for dinner and the amounts of the tips that were left. Construct a scatterplot, find the value of the linear correlation coefficient r, and find the P-value of r. Determine whether there is sufficient evidence to support. of a = 0.01. If everyone were to tip with the same percentage, what should be the value of r? a claim of linear correlation between the two variables. Use a significance level Bill (dollars) Tip (dollars) 32.09 48.22 86.98 102.71 66.52 112.46 6.08 5.24 16.05 12.31 7.27 14.62
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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h9
Transcribed Image Text:Listed below are amounts of bills for dinner and the amounts of the tips that were left. Construct a scatterplot,
find the value of the linear correlation coefficient r, and find the P-value of r. Determine whether there is
sufficient evidence to support a claim of linear correlation between the two variables. Use a significance level
of a = 0.01. If everyone were to tip with the same percentage, what should be the value of r?
Bill (dollars)
Tip (dollars)
32.09
48.22
86.98
102.71
66.52
112.46
6.08
5.24
16.05
12.31
7.27
14.62
Transcribed Image Text:The linear correlation coefficient is r= .908 .
(Round to three decimal places as needed.)
Determine the null and alternative hypotheses.
Ho:p =
(Type integers or decimals. Do not round.)
The test statistic is t= 4.33.
(Round to two decimal places as needed.)
The P-value is .012.
(Round to three decimal places as needed.)
Because the P-value of the linear correlation coefficient is less than or equal to the significance level, there
is
sufficient evidence to support the claim that there is a linear correlation between bill amounts and tip amounts.
If
everyone were to tip with the same percentage, then r= 1.
(Round to three decimal places as needed.)
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