**Stat 230 Midterm (1)A+++**

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Circle the best answer for each question

Use the following data for questions 1 through 4: 5,12,6,8,5,6,7,5,12,4.

- The median is

- 5

- 6

- 7
- 8
- None of the above

- The mode is

- 5

- 6
- 7
- 8
- None of the above

- The mean is

- 5
- 6

- 7

- 8
- None of the above

- The 75
^{th}percentile is

- 5
- 6
- 7

- 8

- None of the above

Use the following data for questions 5 through 9: 3,5,12,3,2.

- The variance is

- 80
- 4.062
- 13.2

- 16.5

- None of the above

- The standard deviation is

- 8.994

- 4.062

- 13.2
- 16.5
- None of the above

- The coefficient of variation is

- 72.66%

- 81.24%

- 264%
- 330%
- None of the above

- The range is

- 1
- 2

- 10

- 12
- None of the above

- The interquartile range is

- 1

- 2

- 10
- 12
- None of the above

10. If A and B are independent events with P(A) = 0.4 and P(B) = 0.6, then

P(A l B) =

- 0.76
- 1.00
- 0.24
- 0.2

- None of the above = 0.4

- If A and B are independent events with P(A) = 0.2 and P(B) = 0.6, then

P(A U B) =

- 0.62
- 0.12
- 0.60

- 0.68

- None of the above

- If A and B are independent events with P(A) = 0.05 and P(B) = 0.65,

then P(A l B) =

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