The amount of time that a drive-through bank teller spends on a customer is a random variable with a mean μ = 7.5 minutes and astandard deviation o=3.6 minutes. If a random sample of 81 customers is observed, find the probability that their mean time at the teller'swindow is(a) at most 6.7 minutes;(b) more than 7.9 minutes;(c) at least 7.5 minutes but less than 8.1 minutes.Click here to view page 1 of the standard normal distribution table.Click here to view page 2 of the standard normal distribution table.(a) The probability that the mean time is at most 6.7 minutes is(Round to four decimal places as needed.)(b) The probability that the mean time is more than 7.9 minutes is(Round to four decimal places as needed.)(c) The probability that the mean time is between 7.5 minutes and 8.1 minutes is(Round to four decimal places as needed.)4

The given mean is 7.5 and standard deviation is 3.6.

Answered: The amount of time that a drive-through…

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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