Chapter 9.3, Problem 97E

a.

To determine

To check: If it is concluded that there are 4 people that have ESP.

Answer to Problem 97E

No.

Explanation of Solution

Given:

Number of subjects = 400

Number of people that have ESP = 4

Using the significance level, it is expected that at least $500\left(0.01\right)=5$ of the total 500 individuals that could do significantly better if random guessing is done. It shows that there are more than 4 people that have ESP that could be used for random guessing.

b.

To determine

To make: The suggestions for the researcher to check if any of the 4 individuals having ESP.

Explanation of Solution

The researcher could ask the four people that have ESP to repeat the procedure and check if they are performing better or not. If any of the individual does better then he must be having ESP for random guessing.