Recently a group of adults who swim regularly for exercise was ...

[B]

Recently a group of adults who swim regularly for exercise was evaluated for depression. Each person's depression status was recorded as either currently depressed, likely to get depressed, or not depressed. It turned out that these swimmers were less likely to be depressed than the general population. What sample size was used if the margin of error was about 6?
 a. n = 17
  b. n = 36
  c. n = 278
  d. n = 400

Question 2

Which one of the following statements is true?
 a. Increasing the sample size of a survey decreases the margin of error.
  b. Increasing the sample size of a survey increases the margin of error.
  c. Increasing the sample size of a survey decreases the impact of response bias.
  d. Increasing the sample size of a survey increases the impact of response bias.

[cassie_ragen]

Answer to Question 1

C

Answer to Question 2

A

[B]

Excellent

[Kedrick2014]

Gracias!