A true-false quiz with 10 questions was given to a statistics class.

Question

Following is the probability distribution for the score of a randomly chosen student. Find the mean score and interpret the result. Round the answers to two decimal places as needed.

x

y

Answer 1

The mean is equal to the sum of x * P(x), where x = 5, 6, 7, 8, 9 and 10 and P(x) is the probability associated with x in the table.