A pizza shop claims its average home delivery time is 22 minutes. A sample of 40 deliveries had a sample average of 23.7 minutes. Assume the population standard deviation for the shop's deliveries is 5.2 minutes. Complete parts a and b below. a. Is there support for the shop's claim that the population mean is 22 minutes, using the 5% rule? Select the correct choice below and fill in the answer box within your choice. (Type an integer or decimal rounded to four decimal places as needed) O A. The probability P (x2 23.7) =| This indicates that the probability of a sample average of 23.7 minutes is less than 5%, contradicting the shop's claim. O B. The probability P (x 2 23.7) = . This indicates that the probability of a sample average of 23.7 minutes is greater than 5%, supporting the shop's claim.

A pizza shop claims its average home delivery time is 22 minutes. A sample of 40 deliveries had a sample average of 23.7 minutes. Assume the population standard deviation for the shop's deliveries is 5.2 minutes. Complete parts a and b below. a. Is there support for the shop's claim that the population mean is 22 minutes, using the 5% rule? Select the correct choice below and fill in the answer box within your choice. (Type an integer or decimal rounded to four decimal places as needed) O A. The probability P (x2 23.7) =| This indicates that the probability of a sample average of 23.7 minutes is less than 5%, contradicting the shop's claim. O B. The probability P (x 2 23.7) = . This indicates that the probability of a sample average of 23.7 minutes is greater than 5%, supporting the shop's claim.

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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