A class survey in a large class for first-year college students asked, "About how many hours do you study during a typical week?" The mean response of the 463 students was x = 15.8 hours. Suppose that we know that the study time follows a Normal distribution with standard deviation o = 8.3 hours in the population of all first-year students at this university. (a) Use the survey result to give a 99% confidence interval for the mean study time of all first-year students. (Round your answers to once decimal place.) 12 X to 14 X hours (b) What condition not yet mentioned must be met for your confidence interval to be valid? O We need to know this sample can be considered an SRS of the population of all first-year students at this university. e We need to know if this sample is normally distributed.

A class survey in a large class for first-year college students asked, "About how many hours do you study during a typical week?" The mean response of the 463 students was x = 15.8 hours. Suppose that we know that the study time follows a Normal distribution with standard deviation o = 8.3 hours in the population of all first-year students at this university. (a) Use the survey result to give a 99% confidence interval for the mean study time of all first-year students. (Round your answers to once decimal place.) 12 X to 14 X hours (b) What condition not yet mentioned must be met for your confidence interval to be valid? O We need to know this sample can be considered an SRS of the population of all first-year students at this university. e We need to know if this sample is normally distributed.

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Description: A class survey in a large class for first-year college students asked, "About how many hours do you study during a typical week?" The mean response of the 463 students wasx= 15.8 hours. Suppose that we know that the study time follows a Normal distr

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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