Which of the following is an appropriate null hypothesis?

A) The mean of a population is equal to 60.
B) The mean of a sample is equal to 60.
C) The mean of a population is not equal to 60.
D) All of these choices are true.

Anomalous data may be dealt with by all methods EXCEPT ______.

A) not analyzing them
B) analyzing them along with other data
C) analyzing them separately from other data
D) replacing the anomalous data with an average of the rest of the data

14 pounds of mixed nuts sells for $6.21 per pound. The mixture is obtained from two kinds of nuts, peanuts priced at $5.5 per pound and cashews at $6.5 per pound. How many pounds of each variety of nut are used in the mixture?

A) 10 pounds of peanuts and 4 pounds of cashews are used in the mixture.
B) 6 pounds of peanuts and 4 pounds of cashews are used in the mixture
C) 4 pounds of peanuts and 6 pounds of cashews are used in the mixture.
D) 4 pounds of peanuts and 11 pounds of cashews are used in the mixture.
E) 4 pounds of peanuts and 10 pounds of cashews are used in the mixture.

Determine if $x=-5$ is a solution to $|x|\le 5$ .

A) $x=-5$ is a solution.
B) $x=-5$ is not a solution.

The Consumer Price Index rose from 131.2 to 132.1 during the second quarter of a year. What was the effective annualized rate of inflation during the quarter?