Market Research

A store looking to increase business on weekdays is randomly picking four customers every Wednesday to go on a free shopping spree as a promotional event. If 192 people shop on a certain Wednesday, how many different groups of four can win the prize?

• 48,054,870

• 80,548,704

• 54,870,480

• 48,704,805

A calculator company wants input from math students. They take a random sample of students from fifth-period math classes in a local high school and give them a questionnaire. Which of the following words describes the disadvantage of this method of sampling?

• Nonresponse

• Undercoverage

• Replacement

• Unbiased Estimator

A questionnaire asking adults about their income could be subject to noncompliance due to dishonesty. This is an example of ______________?

• Nonresponse

• Undercoverage

• Replacement

• Unbiased Estimator

The New York Metropolitan area has nine major professional sports teams:

Mets (M), Yankees (Y), Knicks (K), Rangers (R),Devils (D), Nets (N), Islanders (I), Giants (G), Jets (J)

Marra’s Sporting Goods is going to randomly pick three teams to feature in its next advertisement. How many samples of size 3 are possible?

• 27

• 48

• 7

• 84

The New York Metropolitan area has nine major professional sports teams:

Mets (M), Yankees (Y), Knicks (K), Rangers (R),Devils (D), Nets (N), Islanders (I), Giants (G), Jets (J)

Marra’s Sporting Goods is going to randomly pick three teams to feature in its next advertisement. How many samples of size 3, taken without replacement, include the Mets and the Jets?

• 7

• 1

• 14

• 21

Imagine a population of six brands of sneakers; All Star, Bikees, Cadverse, Didas, Evia, Falance. Represent these brands by the letters A, B, C, D, E, and F. How many different samples of size 2 can be taken without replacement?

A school’s student government organization is doing a study of students who copy each other’s homework. They randomly select 200 students and have them fill out an anonymous questionnaire. Which do you think is a greater problem in this scenario, nonresponse or undercoverage?

As part of a study on exercising, Liam has to use a treadmill for 20 minutes each day, and then take and record his heart rate and blood pressure. Liam skips days, sometimes doesn’t do the entire 20 minutes, and sometimes forgets to record his heart rate and blood pressure. Is this an example of undercoverage or nonresponse?

Just carpets has eight different quality grades of carpeting. Three types are being selected for a corporate test on durability. How many different samples of size 3 can be taken, without replacement?

Just carpets has eight different quality grades of carpeting. Three types are being selected for a corporate test on durability. How many different samples of size 5 can be taken without replacement?