A publisher wants to estimate the mean length of time (in minutes) all adults spend reading newspapers. To determine this estimate, the publisher takes a random sample of 15 people and obtains the results below. From past studies, thepublisher assumes a is 1.8 minutes and that the population of times is normaly distributed.8.1111107101012611Construct the 90% and 99% confidence intervals for the population mean. Which interval is wider? If convenient, use technology to construct the confidence intervals.The 90% confidence interval is OO). (Round to one decimal place as needed.)

Given: sample size, n=15 σ=1.8 Length of times, x 8 11 11 10 6 7 9 10 10 12…

Answered: Construct the 90% and 99% confidence…

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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Construct the 90% and 99% confidence intervals for the population mean. Which interval is wider? If convenient, use technology to construct the confidence intervals. The 90% confidence interval is ( (Round to one decimal place as needed.)