QUESTION 18The service time for customers coming through a checkout counter has mean 50 seconds and standard deviation 6.8seconds. Find the probability that the average service time for 64 passengers to get service will be between 48.4 and 51.6seconds.0.18970.96990.93990.0301QUESTION 19A research worker wants to determine the average time it takes a mechanic to rotate the tires of a car, and she wants to beable to assert with 95% confidence that the mean of her sample is off by at most 0.3 minutes. If she can presume from pastexperience that the actual time follows normal distribution with a standard deviation of 1.5 minutes, how large the samplewill she have to take?96SavClick Save and Submit to save and submit. Click Save All Answers to save all answers.

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Description: QUESTION 18The service time for customers coming through a checkout counter has mean 50 seconds and standard deviation 6.8seconds. Find the probability that the average service time for 64 passengers to get service will be between 48.4 and 51.6secon

Let, X=the service time Given that X follows a normal distribution with mean=50 and standard…

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Probability

QUESTION 18 The service time for customers coming through a checkout counter has mean 50 seconds and standard deviation 6.8 seconds. Find the probability that the average service time for 64 passengers to get service will be between 48.4 and 51.6 seconds. 0.1897 0.9699 0.9399 0.0301

QUESTION 18 The service time for customers coming through a checkout counter has mean 50 seconds and standard deviation 6.8 seconds. Find the probability that the average service time for 64 passengers to get service will be between 48.4 and 51.6 seconds. 0.1897 0.9699 0.9399 0.0301

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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