Last year the college basketball team averaged 72 points per game with a standard deviation of 6.In the first game this season,they scored 85 points.Compared to last year,this score is
A)a little above average.
B)far above average.
C)above average,but it is impossible to describe how much above average.
D)There is not enough information to compare this score with last year's average.

Question

Quizplus · Accepted Answer

The score of 85 points is 2.17 standard deviations above the mean of last year's average (z-score = (85-72)/6 = 2.17), which is a relatively rare event. Therefore, it can be described as far above average.

Last Year the College Basketball Team Averaged 72 Points Per