An economist would like to test the hypothesis that the average daily screen time that a personspends on mobile devices is greater than 300 minutes. A random sample of 30 smartphone userswas selected and their daily screen time was recorded. The standard deviation for the 30smartphone owners using their devices is 112.19 minutes and the sample mean of the daily screentime is 297.17 minutes. Using a = 0.05, the conclusion on the hypothesis test isOthere is not enough evidence supporting that the average screen time is greater than 300 minutes per day.there is enough evidence supporting that the average screen time is greater than 300 minutes per day at90% confidence level.there is enough evidence supporting that the average screen time is greater than 300 minutes per day at95% confidence level.there is enough evidence supporting that the average screen time is greater than 300 minutes per day at99% confidence level.

Givensample size(n)=30standard deviation(s)=112.19Mean(x)=297.17significance level(α)=0.05

Answered: An economist would like to test 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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