In a survey of smartphone usage, randomly selected users were asked to record their talk time in minutes per day. The results are shown below.1715121110121011121711131414161510141410Use a 0.10 significance level to test the claim that the mean talk time for smartphone users is less than 14 minutes per day.Write your conclusion using plain English.T T TArialvT= - E3 (12pt)ABC四i ン

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Description: In a survey of smartphone usage, randomly selected users were asked to record their talk time in minutes per day. The results are shown below.1715121110121011121711131414161510141410Use a 0.10 significance level to test the claim that the mean talk

Answered: In a survey of smartphone usage,…

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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In a survey of smartphone usage, randomly selected users were asked to record their talk time in minutes per day. The results are shown below.
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Use a 0.10 significance level to test the claim that the mean talk time for smartphone users is less than 14 minutes per day.
Write your conclusion using plain English.
T T TArial
vT= - E
3 (12pt)
ABC
四i ン

Expert Solution

Step 1

The claim can be tested using following steps:

Step 1: Formulate the hypothesis

Null Hypothesis (H_o): u = 14 minutes per day

Alternate Hypothesis (H_a): u > 14 minutes per day

Step 2: Decide the level of significance

The level of significance is assumed to be 0.1

Step 3: Decide the test statistic

The t test will be used since the sample size is less than 30

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