The following data represents the number of minutes an athlete spends training per day.

73 74 7677797983848884848586

86 87 8788919292939798988182

The mean and standard deviation were computed to be 85.54 and 6.97, respectively.

a. What percentage of measurements would you expect to be between 71.60 and 99.48?

______________

b. What percentage of the measurements lies in the interval (71.60, 99.48)?

Question:

The following data represent the scores for a sample of 10 students on a 20-point chemistry quiz:

16 14 2 8 12 12 9 10 15 13

Calculate the z score for the smallest and largest observations

Smallest: ______________

Largest: ______________

Is either of these observations unusually large or unusually small?