Data Set 7-4: A set of scores with a mean of 16 and a standard deviation of 3.
-Look at Data Set 7-4. What scores are so extreme they are made by only five percent of the population?
A) 11.00, 20.00
B) 11.18, 20.82
C) 10.12 21.88
D) none of the other alternatives are correct.

Question

Quizplus · Accepted Answer

Scores that are in the extreme 5% of a normal distribution are typically found beyond 1.645 standard deviations from the mean in either direction. Calculating this: 16 ± (1.645 * 3) gives approximately 10.12 and 21.88.

Data Set 7-4: a Set of Scores with a Mean