The amount of time that a customer spends waiting at an airport check-in counter is a random variable with mean 8.2 minutes andstandard deviation 1.7 minutes. Suppose that a random sample of n = 47 customers is observed. Find the probability that theaverage time waiting in line for these customers is(a) Less than 10 minutes(b) Between 5 and 10 minutes(c) Less than 6 minutesRound your answers to four decimal places (e.g. 0.9876).(a) The probability is i 0.29015(b) The probability is i(c) The probability is 00.29015Statistical Tables and Charts

Given,mean(μ)=8.2standard deviation(σ)=1.7sample size(n)=47

Answered: The amount of time that a customer…

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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Business Weekly conducted a survey of graduates from 30 top MBA programs. On the basis of the survey, assume the mean annual salary for graduates 10 years after graduation is 149000 dollars. Assume the standard deviation is 44000 dollars. Suppose you take a simple random sample of 63 graduates.Find the probability that a single randomly selected salary is at least 144000 dollars.P(X > 144000) = 0.5438 wrong toFind the probability that a sample of size n=63n=63 is randomly selected with a mean that is at least 144000 dollars.P(M > 144000) = 0.8159 it is wrong is> no >or equal please
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