The data table contains waiting times of customers at a bank, where customers enter a single waiting line that feeds three tellerwindows. Teststandard deviation of waiting times is less than 2.4 minutes, which is the standard deviation of waiting times at the same bank when separate waiurng es areused at each teller window. Use a significance level of 0.01. Assume that the sample is a simple random sample selected from a normally distributedpopulation. Complete parts (a) through (d) below.E Click on the icon to view the data.that thea. Identify the null and alternative hypotheses. Choose the correct answer below.A. Hg: a=24 minutesHA o<24 minutesOB. Ho: o2 24 minutesHAa<24 minutesC. Hg: a = 2.4 minutesO D. Ho: a<24 minutesHAo24 minutesHA o424 minutesb. Compute the test statistic.(Round to two decimal places as needed.) Customer Waiting Times(in minutes)8.96.27.17.16.47.87.17.77.86.68.26.66.77.27.67.37.56.35.37.77.98.97.56.16.28.27.38.36.47.96.27.98.88.86.77.56.47.86.67.27.56.85.47.68.36.38.77.88.37.17.56.26.46.37.97.96.57.26.77.6

The random variable waiting time follows normal distribution. We have to test whether the standard…

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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Times for a surgical procedure are normally distributed. There are two methods. Method A has a mean of 35 minutes and a standard deviation of 3 minutes, while method B has a mean of 39 minutes and a standard deviation of 1.5 minutes. Which procedure is preferred if the procedure must be completed within 34 minutes? Which procedure is preferred if the procedure must be completed within 40.0 minutes? Which procedure is preferred if the procedure must be completed within 43 minutes?
To compare the dry braking distances from 30 to 0 miles per hour for two makes of automobiles, a safety engineer conducts braking tests for 35 models of Make A and 35 models of Make B. The mean braking distance for Make A is 42 feet. Assume the population standard deviation is 4.7 feet. The mean braking distance for Make B is 45 feet. Assume the population standard deviation is 4.4 feet. At a = 0.10, can the engineer support the claim that the mean braking distances are different for the two makes of automobiles? Assume the samples are random and independent, and the populations are normally distributed. Complete parts (a) rari rz (b) Find the critical value(s) and identify the rejection region(s). The critical value(s) is/are (Round to three decimal places as needed. Use a comma to separate answers as needed.)
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For a certain type of computers, the length of time between charges of the battery is normally distributed with a mean of 62 hours and a standard deviation of 11 hours. John owns one of these computers and wants to know the number of hours when the computer would have 12% of its battery life left. Sketch the region in question. Write a sentence describing what your answer represents about the problem's specefics.
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The distribution of the student heights at a large college is approximately bell shaped. If the mean height is 66 inches,and approximately 95% of the heights fall between 32 and 100 inches, then, the standard deviation of the heightdistribution is approximately equal to
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A set of data item is normally distributed with a mean 218 and a standard deviation of 49. Find the data item in the distribution that corresponds to the given z score. Z-score=-1.3
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