Indicate the appropriate Null and Alternative Hypotheses for the following:
A. If a bank's ATM is out of service more than an average of 10 hours per month
B. If the mean time of experience for airport security guards is different from three years
C. If the credit card debt of college students is less than $1000
D. If the mean time to wait to speak on the phone to a mail company is greater than 10 minutes
E. If the mean starting salary for high school teachers in Alabama differs from the national average of $35,000
F. If the percentage of all voters in favor of a Democrat for President is above 50%
G. The company claims that at least 90% of all orders are mailed within 72 hours after they are received
H. A psychologist claims that the mean age at which children start walking is 12.5 months
I. The mayor of a large city claims that the average net worth of families living in this city is at least $300,000