Recently, the average amount of time to foreclose on a house in the U.S. was reported to be 359 days. Assume that the standard deviation for this population is 90.4 days.
A random sample of 42 homes that have completed the foreclosure process was selected. What is the probability that the sample average was less than 375 days?A) 0.5129
B) 0.6350
C) 0.7264
D) 0.8749
Question 2
Travelocity would like to test if the standard deviation for roundtrip airfares between New York and London is less than 200.
A random sample of 22 roundtrip airfares between New York and London had a standard deviation of 142. The test statistic for this hypothesis test would be ________.
A) 7.03
B) 8.67
C) 10.59
D) 13.36