An Internet service provider is interested in testing to see if there is a difference in the mean weekly connect time for users who come into the service through a dial-up line,DSL,or cable Internet.To test this,the ISP has selected random samples from each category of user and recorded the connect time during a week period.The following data were collected: Which of the following would be the correct alternative hypotheses for the test to be conducted?
A) : = =
B) : ≠ ≠
C)Not all population means are equal.
D) = = =

Question

An Internet service provider is interested in testing to see if there is a difference in the mean weekly connect time for users who come into the service through a dial-up line,DSL,or cable Internet.To test this,the ISP has selected random samples from each category of user and recorded the connect time during a week period.The following data were collected:  Which of the following would be the correct alternative hypotheses for the test to be conducted?
A) : = = 
B) : ≠ ≠ 
C)Not all population means are equal. 
D) = = =

Quizplus · Accepted Answer

The correct hypotheses for this test should be a statement of a difference, indicating that not all population means are equal. Option C is the only one that fits this criteria. Option A and D are stating equality between the population means, and option B is using the "not equal" symbol inappropriately.

An Internet Service Provider Is Interested in Testing to See