Author Question: The critical value for a one-tail (upper) hypothesis test when the population standard deviation is ... (Read 137 times)

Redwolflake15 · **on:** Jun 24, 2018

The critical value for a one-tail (upper) hypothesis test when the population standard deviation is known, the sample size is 30 or more, and = 0.02 is ________.

A) 2.05
B) 2.33
C) 2.575
D) 2.96

Question 2

Assume that the flight time for a United Airlines flight from Philadelphia to Dallas follows the uniform probability distribution between 210 and 250 minutes. What is the standard deviation of this distribution?

A) 5.23
B) 7.91
C) 9.60
D) 11.55