For each conjecture, state the null and alternative hypotheses.
a. The average weight of dogs is 15.6 pounds.
b. The average distance a person lives away from a
toxic waste site is greater than 10.8 miles.
c. The average farm size in 1970 was less than
390 acres.
d. The average number of miles a vehicle is driven
per
year is 12,603
e. The average amount of money a person keeps in his
or her checking account is less than $24.