Question

Given a spinner with 9 equal-area sections, a trial of 100 spins resulted in an experimental probability of 13% for the spinner

landing on 4. Which of the following statements must be false?
A. The theoretical probability P(spinner < 4) = 100%
B. The theoretical probability P(spinner =4) = 11%
C. In a new trial of 100 spins, the experimental probability, P(spinner=4) may be different.
D. The experimental probability P(not spinner =4) = 87% for this trial.

Answer 1

The answer is spinner B. There are 8 sections on the spinner and 4 of them have letter A, so P(A)= 1/2.

Answer 2

b

Explanation: