Question

Suppose Q-Mart plans to obtain information on a randomly selected sample of customers using each type of charge card, using equal sample sizes. The estimated common standard deviation is 70. A) Are the two samples paired or independent

Answer 1

Independent

Explanation:

Paired: Two different variable observed on same group at different points in time. Here a randomly selected samples is observed for type of change card.

Independent: A single variable observed on multiple groups.