Question

A psychologist thinks that listening to Mozart helps people think. She gives subjects a set of puzzles and measure how many they solve in 5 minutes while listening to Mozart. From data on a very large number of simulations, the psychologist gets the attached probability model. What is the probability that a subject solves more than 1 puzzle is _______.

Answer 1

Answer: 0.8

Explanation:

Let's assume that 5 puzzles were solved in 5mins. That is, 1min for each puzzle to be solved.

From our assumption, our sample size will be 5.

The probability that a subject will solve more than 1 puzzle will be number of occurrence from 2 to 5 which is 4.

This gives: 4/5 = 0.8 to one decimal place.