A true-false quiz with 10 questions was given to a statistics class. 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 5 6 7 8 9 10 Px 0.07 0.17 0.38 0.21 0.1 0.07

The mean score is 7.31. This means that each time the student takes this test, he is expected to get a score of 7.31.

Step-by-step explanation:

We have these following probabilities:

A 0.07 = 7% probability that the student scores 5 points.

A 0.17 = 17% probability that the student scores 6 points.

A 0.38 = 38% probability that the student scores 7 points.

A 0.21 = 21% probability that the student scores 8 points.

A 0.1 = 10% probability that the student scores 9 points.

A 0.07 = 7% probability that the student scores 10 points.

Mean score

We multiply each score by it's probability. So

The mean score is 7.31. This means that each time the student takes this test, he is expected to get a score of 7.31.

there is no grid

step-by-step explanation: