Question

9. A set of scores has a mean of 20. If each score is multiplied by 10, what will happen to the mean?

A) The mean will not change

B) It will be equal to the original mean multiplied by 10

C) It will be equal to the original mean multiplied 2

D) Cannot be determined from the information given

12. A population of N = 15 has a mean of μ = 25. After one score is removed from the population, the new mean is found to be μ = 20. What is the value of the score that was removed?

A) 35

B) 65

C) 95

D) 5

13. In 2007, the famous American golfer Happy Gilmore competed in 9 PGA tournaments.   He finished 1^st once, 2^nd 3 times, and one time each in 5th, 9^th, 12^th, 30^th, and 37^th place.   What was his average (i.e, mean) place for the year?   Round your answer so that you have no decimal places.

A) 3rd

B) 12th

C) 14th

D) 11th

Answer 1