Question

The mean weight of nine players on a baseball team is 71 pounds. The weights of the nine baseball players are: { 64, 75, 68, 72, 80, 76, 68, 74, n }. The equation below can be used to find the weight of the ninth player. Which of the values listed { 71, 73, 62, 82, 64 } can be the weight of the ninth baseball player? Explain how you found your answer.

Answer 1

Explanation

The mean is equal to the total weight of the players/the number of players

So, 64, 75, 68, 72, 80, 76, 68, 74, n/ 9=71

Once you add the values in the numerator, you would get 577+n/9=71

n= 71 * 9=639

639-577=62

So, the weight of the 9th player would be 62 pounds.