QUESTION 1

The following refer to the following data set:

110.6	102.3	110.6	87.7	98
110.6	80.6	91	76.5	95.8

What is the arithmetic mean of this data set? mean = What is the median of this data set? median = What is the mode of this data set? mode =

QUESTION 2

Calculate the sample standard deviation of the data shown. Round to two decimal places.

x

18

25

24

11

28

20

22

sample standard deviation =

QUESTION 3

The most recent exam scores have a mean of 72 and a standard deviation of 5.1. The z-score of John Rey's test score is -1.2. What is his test score?

(Round the answer to 2 decimal places)

QUESTION 4

In a mid-size company, the distribution of the number of phone calls answered each day by each of the 12 receptionists is bell-shaped and has a mean of 61 and a standard deviation of 3. Using the empirical rule (as presented in the book), what is the approximate percentage of daily phone calls numbering between 52 and 70?

QUESTION 5

The mean score on a driving exam for a group ofdriver's education students is 72 points, with a standard deviation of 3points.ApplyChebyshev's Theorem.At least 75% of the exam scores fall between and. (Enter the smaller number first.)At least 88.9% of the exam scores fall between---- and-----. (Enter the smaller number first.)

(Please keep the answers sequentially. Thanks)