Find the mean, median, and mode of the data, if possible. If any of these measures cannot be found or a measure does not represent the center of the data, explain why.

The durations (in minutes) of power failures at a residence in the last

3years are listed below.

12

47

43

86

38

129

65

86

28

129

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Part 1

What is the mean duration? Select the correct choice below and fill in any answer box to complete your choice.

A.The mean duration is____________minutes.(Round to one decimal place as needed.)

B.There is no mean score.

2)(a) Find the five-number summary, and (b) draw a box-and-whisker plot of the data.

4

8

8

6

2

9

8

7

9

6

9

5

2

6

2

9

8

7

7

9

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Part 1

(a)Min=___________enter your response here

(Simplify your answer.)

3)Identify the sample space of the probability experiment and determine the number of outcomes in the sample space.

Randomlychoosinganumberfromtheoddnumbersbetween1and9,inclusive

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Part 1

The sample space is________________________

(Use a comma to separate answers as needed. Use ascending order.)

4)The accompanying table shows the results of a survey in which

250 male and 250 female workers ages 25 to 64 were asked if they contribute to a retirement savings plan at work. Complete parts (a) and (b) below.

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Part 1

(a) Find the probability that a randomly selected worker contributes to a retirement savings plan at work, given that the worker is male.

The probability that a randomly selected worker contributes to a retirement savings plan at work, given that the worker is male, is________

(Round to three decimal places as needed.)

	Contribute	Do not contribute	Total
Male	123	127	250
Female	136	114	250
Total	259	241

5) The probability that a person in the United States has type

B+ blood is 8%. Three unrelated people in the United States are selected at random. Complete parts (a) through (d).

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Part 1

(a) Find the probability that all

three have type B+blood.

The probability that all three have type B+

blood is_________

(Round to six decimal places as needed.)

6)Determine the probability that at least 2 people in a room of 8 people share the same birthday, ignoring leap years and assuming each birthday is equally likely, by answering the following questions.

(a) Compute the probability that 8 people have different birthdays.

(b) The complement of "8 people have different birthdays" is "at least 2 share a birthday". Use this information to compute the probability that at least 2 people out of

8 share the same birthday.

(a) The probability that

8people have different birthdays is________

(Round to three decimal places as needed.)