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

Independent

Step-by-step 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.

step-by-step explanation:

you can add the two numbers and divide the result by 2. or you can find the gap between the two numbers and add half of this to the smaller number.