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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 17 15 12 11 10 12 10 11 12 17 11 13 14 14 16 15 10 14 14 10 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 TTArial

In a survey of smartphone usage, randomly selected users were asked to record their talk time in minutes per day. The results are shown 17 15 12 11 10 12 10 11 12 17 11 13 14 14 16 15 10 14 14 10 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 TTArial

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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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. 17 15 12 11 10 12 10 11 12 17 11 13 14 14 16 15 10 14 14 10 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
Transcribed Image Text: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. 17 15 12 11 10 12 10 11 12 17 11 13 14 14 16 15 10 14 14 10 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 (Ho): u = 14 minutes per day

Alternate Hypothesis (Ha): 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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