YouTube Would Like to Test the Hypothesis That the Average

question 135

Multiple Choice

YouTube would like to test the hypothesis that the average length of an online video watched by a user is more than 8 minutes. A random sample of 37 people watched online videos that averaged 8.7 minutes in length. It is believed that the population standard deviation for the length of online videos is 2.5 minutes. YouTube would like to set α = 0.02. The conclusion for this hypothesis test would be that because the test statistic is
-------
.

• A)more than the critical value, we can conclude that the average length of an online video is
• B)less than the critical value, we can conclude that the average length of an online video is more than 8 minutes
• C)less than the critical value, we can conclude that the average length of an online video is not more than 8 minutes
• D)more than the critical value, we can conclude that the average length of an online video is not more than 8 minutes

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Definitions:

Promotion

Marketing activities intended to increase the awareness, interest, and sales of a product or service.

Compensation Increase

An adjustment or rise in the salary or wages paid to an employee.

Transfer

A move to another job within the company at essentially the same level and wage.