Mathematics, 17.03.2020 17:03 griffinadrianne9109
43 random movie theaters across the US were surveyed, and each reported its revenue (in $) from the film Gemini Man last weekend. These values were stored in the R vector revenue, and the result of some code is given below. > t. test(revenue, conf. level=.95) $conf. int [1] 5071.03 5748.24 attr(, "conf. level") [1] 0.95
a) Interpret this confidence interval in the context of the story.
b) Calculate the degrees of freedom being used here.
c) Keeping everything else the same, what would happen if the confidence level were increased to 99%?
A. The confidence interval would become wider
B. The confidence interval would become narrower
C. The width of the confidence interval would not change
d) Keeping everything else the same, what would happen if the sample size increased?
A. The confidence interval would become wider
B. The confidence interval would become narrower
C. The width of the confidence interval would not change
e) If we were testing H1: 4 > $5000, what can you say about the p-value?
A. The p-value would be greater than 0.1
B. The p-value would be between 0.1 and 0.05
C. The p-value would be between 0.05 and 0.025
D. The p-value would be below 0.025
Answers: 3
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43 random movie theaters across the US were surveyed, and each reported its revenue (in $) from the...
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