Below is the summary table of the duration of long-distance calls reported in 2000 of a city:15.2 minutesPopulation mean5%Percentage of calls last shorter than 10 minutes45%Percentage of calls last shorter than 15 minutes75%Percentage of calls last shorter than 20 minutes85%Percentage of calls last shorter than 25 minutesRecently, a telecommunication company has done a survey. Below is the duration (in minutes) of long-distance calls of a random sample of 35 calls:8.8,8.9,10.8,11.3,12.9,13.3,15.8,16.1,16.7,1717.8,18.5,19.8,21.2,21.3,21.3,21.5,21.6,22.1,22.8,23.9,23.9,23.9,23.9,24.7,24.9,25.6,26.7,26.9,27.1,27.9,28.6,29.7,33.8,39.2(a) Find the sample mean, sample standard deviation, median, and mode of the above data.(b) Construct a 95% confidence interval estimate of the population mean duration of long-distance calls in2021.(c) Is there sufficient evidence to conclude that the population proportion of long-distance calls last longerthan 25 minutes in 2021 is higher than that in 2000? Test, at 5% level of significance. (The test reportmust include (i) null hypothesis and alternative hypothesis, (ii) rejection region, (ii) calculation of teststatistics, and (iv) conclusion.)

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Answered: Below is the summary table of the…

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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