Chapter 10.1, Problem 4E

a.

To determine

To find: Whether the provided problem is about comparing proportions or comparing means.

Answer to Problem 4E

It is about comparing means

Explanation of Solution

Given:

A bank needs to know which of two motivator plans will most expand the utilization of its Visas. It offers every motivation to a gathering of current Visa clients, decided indiscriminately, and thinks about the sum charged during the accompanying a half year.

Here, two scores are involved and scores are quantitative values. The data is numerical which implies that mean scores could be computed. Thus, it could be said that the problem is about the comparing means.

b.

To determine

To find: The study that is being used here.

Answer to Problem 4E

Experimental study.

Explanation of Solution

In an experimental study treatment is applied on the subjects to observe their responses. Here, subjects have been applied to observe the response.

Thus, it is an experimental study.