Question

To evaluate the effectiveness of two website interfaces, a firm showed 50 of the people who came to website interface A, and the next 50 people the website interface B. The firm tracks the time that people stay on the website in seconds. Next, the analyst conducts a t-test. Which procedure is incorrect?

a. T-test is not appropriate for this research.
b. Visitors are not randomly assigned
c. Time of staying on the website is not an appropriate variable to be collected
d. None of the procedures is incorrect

Answer 1

The correct answer is a. T-test is not appropriate for this research.

Step-by-step explanation:

The correct answer to the question is a. T-test is not appropriate for this research.

In this study, the firm is evaluating the effectiveness of two website interfaces by showing 50 people interface A and the next 50 people interface B. The firm is tracking the time that people stay on the website. To analyze the data and compare the two interfaces, a t-test is conducted.

However, in this scenario, the t-test is not appropriate because visitors are not randomly assigned to the interfaces (option b), which violates the assumption of random assignment required for a t-test. Therefore, the correct answer is option a.