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Author Question: YouTube would like to test the hypothesis that the average length of an online video watched by a ... (Read 143 times)

serike

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on: Jun 24, 2018
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  = 0.02. The critical value for this hypothesis test would be ________.A) 2.05
  B) 1.96
  C) 1.645
  D) 1.28

Question 2

The sample correlation coefficient can be equal to any value __________
 
  A) between 1.0 and +1.0.
  B) greater than or equal to zero.
  C) other than zero.
  D) between and .
Business Statistics ¦ Donnelly ¦ 2nd Edition
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Li Jun

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Reply #1 on: Jun 24, 2018
Answer to Question 1

A

Answer to Question 2

A


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