The hypothesis statement is an example of a two-tail hypothesis test.
Indicate whether the statement is true or false
Q. 2Suppose the round-trip airfare between Philadelphia and Los Angeles a month before the departure date follows the normal probability distribution with a mean of 387.20 and a standard deviation of 68.50.
What is the probability that a randomly selected airfare between these two cities will be more than 450?A) 0.0788
B) 0.1788
C) 0.2033
D) 0.3669
Q. 3According to the Mortgage Bankers Association, 11 of U.S. mortgages were delinquent last year. A delinquent mortgage is one that has missed at least one payment but has not yet gone to foreclosure. A random sample of six mortgages was selected.
What is the mean of this distribution?A) 0.31
B) 0.66
C) 0.74
D) 0.93
Q. 4For a given sample size, reducing the value of will result in an decrease in the value of .
Indicate whether the statement is true or false
Q. 5Bob's golf score at his local course follows the normal distribution with a mean of 92.1 and a standard deviation of 3.8. The interval around the mean that contains 68 of Bob's golf scores is ________.
A) 90.2, 94.0
B) 88.3, 95.9
C) 84.5, 99.7
D) 80.7, 103.5
Quick Reply
