A marketing firm is studying consumer preferences for winter

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 438 women was selected in January. Another random sample of 426 women was selected in March. Another random sample of 438 women was selected in June. Another random sample of 438 women was selected in September.

The number of samples was 1,740.

The number of samples was 1.

The number of samples was 4.

The number of samples was 438.

Solution

The number of samples was 4..( because,1 sample for each of the 4 months with different sample sizes)