Question
In: Statistics and Probability
2. Referring to the data set we used in Chapter 2 comparing servers, tips, and credit...
2. Referring to the data set we used in Chapter 2 comparing servers, tips, and credit card usage, we have the following two-way table showing the servers and whether or not the customer used a credit card to pay for their meal.
A B C
Yes 21 15 15
No 39 50 17
a) Compute and interpret a 95% confidence interval for the proportion of bills paid with a credit card.
SE = 0.0373
b) Compute and interpret 90% confidence intervals for the proportion of bills for each server. A: SE = 0.0388, B: SE = 0.0393, C: SE = 0.0321
c) From the confidence intervals in part b) does it appear that Server B is responsible for 1/3 of the bills this week?
Solutions
orchestra answered 1 year agoRelated Solutions
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15-25 Hours Practice
More than 25 Hours Practice
58.7
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10
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