State the null and alternative hypotheses for each conjecture.

a. A researcher thinks that the average amount of sugar consumed by an adult is less than 147 pounds per year.

b. A researcher feels that the average age a person gives up driving an automobile is greater than 85 years old.

c. A researcher thinks that the average time it takes a person to fall asleep is less than 15 minutes.

\(d\). Fifty-four percent of car accidents are caused by sleep deprivation.

e. More than \(40 \%\) of Americans have a "lucky number."

f. Less than \(62 \%\) of spouses keep some money hidden from their significant other.