Referring to the data set we used in Chapter 2 comparing servers, tips, and credit card...

 

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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 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? 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 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?

Answer rating: 100% (QA)

a proportion p51157 03248 z value for 95 is 196 CI pzse Lower limit 0324... View the full answer