Author Question: An Internet service provider is interested in testing to see if there is a difference in the mean ... (Read 65 times)

colton · **on:** Jun 24, 2018

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:Dial Up DSL Cable19.2 40.6 39.517.7 40 42.317.2 41.5 4718.9 30.5 45.426.9 46.8 41.122.6 43.231.2 39.9 41.9 49.3Which of the following would be the correct alternative hypotheses for the test to be conducted?A) H0 : 1 = 2 = 3
B) H0 : 1 2 3
C) Not all population means are equal.
D) 1 = 2 = 3 = 4

Question 2

A warehouse contains 5 parts made by the Stafford Company and 8 parts made by the Wilson Company.

If an employee selects 3 of the parts from the warehouse at random, the probability that none of the 3 parts is from the Wilson Company is approximately .03496. Indicate whether the statement is true or false