1. The null hypothesis will often be stated using the __________.

A. Inequality sign

B. Less than sign

C. Greater than sign

D. Equality sign

2. A manufacturer of a certain brand of rice cereal claims that the average saturated fat content does not exceed 1.5 grams per serving. Identify the parameter to be tested.

A. Amount of rice cereal

B. Number of cereal brands

C. Serving

D. Saturated fat content

3. In an experiment on extrasensory perception (ESP), an individual (subject) in one room is asked to state the color (red or blue) of a card chosen from a deck of 50 well-shuffled cards by an individual in another room. It is unknown to the subject how many red or blue cards are in the deck. What should be the parameter to be tested in this scenario?

A. The number of different colors of the 50 cards

B. The probability of the subject in choosing the color of a card

C. Not enough information from the scenario

D. The number of cards which the subject will choose from.

4. The manufacturer of a patent medicine claims that it is 90% effective in relieving an allergy for a period of 8 hours. In a sample of 200 people who had the allergy, the medicine provided relief for 160 people. Determine which parameter should be tested for the claim.

A. The period of relief from the allergy

B. The probability of obtaining relief

C. The number of patients sampled

D. The probability of choosing the patient with allergies

5. The mean age of policyholders at World Life Insurance Company, determined two years ago, was found to equal 32.5 years and the standard deviation was found to equal 5.5 years. It is reasonable to believe that the mean age has increased. However, some of the older policyholders are now deceased and some younger policyholders have been added. The company determines the ages of 50 current policyholders in order to decide whether the mean age has changed. What should be the parameter to be tested?

A. The mean age of young policyholders

B. The mean age of policyholders

C. The mean age of old policyholders

D. The number of deceased policyholders

6. The police department in a large city claims that the mean 911 response time for domestic disturbance calls is 10 minutes. A "watchdog group" believes that the mean response time is greater than 10 minutes. What should be the parameter to be tested?

A. Probability of a disturbance call

B. Mean response time

C. Number of total calls

D. Number of disturbance calls

7. A pharmaceutical company claims that its weight loss drug allows women to lose 8.5lb after one month of treatment. If we want to conduct an experiment to determine if the patients are losing less weight than advertised, which of the following parameters should be used?

A. Number of women to be tested

B. Amount of weight loss drug

C. Amount of time to lose weight

D. Amount of weight loss of women

8. A certain type of cold vaccine is known to be only 25% effective after a period of 2 years. To determine if a new and somewhat more expensive vaccine is superior in providing protection against the same virus for a longer period of time, suppose that 20 people are chosen at random and inoculated. If more than 8 of those receiving the new vaccine surpass the 2-year period without contracting the virus, the new vaccine will be considered superior to the one presently in use. Determine the parameter needed to be tested.

A. Number of patients to be tested

B. Amount of the cold vaccine to be used

C. Period of effectivity of the vaccine

D. Percent effectivity of the vaccine

9. A tire manufacturer claims that the mean mileage for their premium brand tire is 60,000 miles. A consumer organization doubts the claim and decides to test it. State the null hypothesis.

A. p 60000

B. p < 60000

C. p = 60000

D. p > 60000

10. The National Football League (NFL) claims that the average cost for a family of four to attend an NFL game is $200. This figure includes ticket prices and snacks. A sports magazine feels that this figure is too low and plans to perform a test of hypothesis concerning the claim. State the null hypothesis.

A. p < $200

B. p > $200

C. p $200

D. p = $200