6.36.87.17.56.76.96.97.76.97.56.47.55.87.27.1Customer Waiting Times(in minutes)6.37.67.46.26.67.26.96.86.87.97.27.56.26.46.16.76.46.26.88.16.36.67.46.86.87.378328.26.77.3966.16.57.26.67.17.86.16.87.56.16.18.66.76.37.16.80 The data table contains waiting times of customers at a bank, where customers enter a single waiting line that feeds three teller windows. Test the claim that the standard deviation of waiting times isless than 1.8 minutes, which is the standard deviation of waiting times at the same bank when separate waiting lines are used at each teller window. Use a significance level of 0.05. Assume that thesample is a simple random sample selected from a normally distributed population. Complete parts (a) through (d) below.Click on the icon to view the data.a. Identify the null and alternative hypotheses. Choose the correct answer below.OA. H: 18 minutesHA:a=1.8 minutesOC. Ho: 1.8 minutesHA: <1.8 minutesb. Compute the test statistic.2-0(Round to two decimal places as needed.)c. Find the P-value of the test statisticOB. H: 21.8 minutesHA:<1.8 minutesOD. H: 1.8 minutesHA: #1.8 minutesThe P-value of the test statistic is(Round to three decimal places as needed.)d. Does the use of the single line appear to reduce the variation among waiting times?There is sufficient evidence to conclude that the single line reduced the variation among waiting times because H, is not rejected by the hypothesis test.

The data shows the waiting times of customers at a bank.

Answered: The data table contains waiting times…

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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