The check-out wait times for Grocery Store A are approximately normal with mean 8 minutes and standard deviation 2 minutes. The check-out wait times for Grocery Store B has an unknown distribution with mean 5 minutes and standard deviation 1 minute. A customer shops at Grocery Store A 16 random times throughout the year and at Grocery Store B 36 random times throughout the year. (a) Find the probability that the customer's mean wait time at Store A for the entire year is less than 9 minutes? (b) Determine the probability that the variance in the customer's wait times at Grocery Store A for the entire year is greater than 7.33, i.e. P(Sž>7.33). (c) Determine the probability that the customer's mean wait time at Grocery Store A for the entire year is less than 2 minutes longer than the mean wait time at Grocery Store B for the entire year, i.e., P(XA – Xg < 2).

The check-out wait times for Grocery Store A are approximately normal with mean 8 minutes and standard deviation 2 minutes. The check-out wait times for Grocery Store B has an unknown distribution with mean 5 minutes and standard deviation 1 minute. A customer shops at Grocery Store A 16 random times throughout the year and at Grocery Store B 36 random times throughout the year. (a) Find the probability that the customer's mean wait time at Store A for the entire year is less than 9 minutes? (b) Determine the probability that the variance in the customer's wait times at Grocery Store A for the entire year is greater than 7.33, i.e. P(Sž>7.33). (c) Determine the probability that the customer's mean wait time at Grocery Store A for the entire year is less than 2 minutes longer than the mean wait time at Grocery Store B for the entire year, i.e., P(XA – Xg < 2).

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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