Question

A marketing firm is studying consumer preferences for winter fashions in four different months. From a population of women, 18-21 years of age, a random sample of 100 women was selected in January. Another random sample of 100 women was selected in March. Another random sample of 100 women was selected in June. Another random sample of 100 women was selected in September.

A) The sample size was 4.
B) The sample size was 100.
C) The sample size was 400.
D) The sample size was 1.

Answer 1

B) The sample size was 100

Explanation:

Number of sample size in January = 100

Number of sample size in March = 100

Number of sample size in June = 100

Number of sample size in September = 100

The average sample size for the study = (100 +100+100+100)/4

= 400/4

= 100

So the average sample size for the study is 100 women between 18 to 21 years.