b) Does the confidence interval for the slope contain zero? In other words, can we reject the null hypothesis that temperature and battery life are not correlated at the 5% level of significance? OC.I. for slope does NOT contain zero, we can reject the null hypothesis O c.I. for slope contains zero, we can NOT reject the null hypotheses

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section: Chapter Questions
Problem 26RE
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b) Does the confidence interval for the slope contain zero? In other words, can we reject the null
hypothesis that temperature and battery life are not correlated at the 5% level of significance?
C.I. for slope does NOT contain zero, we can reject the null hypothesis
C.I. for slope contains zero, we can NOT reject the null hypotheses
Transcribed Image Text:b) Does the confidence interval for the slope contain zero? In other words, can we reject the null hypothesis that temperature and battery life are not correlated at the 5% level of significance? C.I. for slope does NOT contain zero, we can reject the null hypothesis C.I. for slope contains zero, we can NOT reject the null hypotheses
The scatter plot and table below show 8 data points that were collected to compare battery life to the
temperature of the battery's environment.
60
y
82
58
55
87
57
82
55
55
55
58
56
54
55
50
51
54
53
53
50 55
60 65 70 75 80 85 90
Тетрerature (F)
The sums of x , y , x , y“ , and xy are shown below:
.2
xy
522
443
35732
24549
29031
The estimates for the slope and intercept of the regression line are
0.075 hours per degree
a
50.481 hours
Battery Lifetime (Hrs)
Transcribed Image Text:The scatter plot and table below show 8 data points that were collected to compare battery life to the temperature of the battery's environment. 60 y 82 58 55 87 57 82 55 55 55 58 56 54 55 50 51 54 53 53 50 55 60 65 70 75 80 85 90 Тетрerature (F) The sums of x , y , x , y“ , and xy are shown below: .2 xy 522 443 35732 24549 29031 The estimates for the slope and intercept of the regression line are 0.075 hours per degree a 50.481 hours Battery Lifetime (Hrs)
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