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Midterm Exam

• There are 4 parts:

Part A: Answer the following questions (1-8)

Part B: True/ False (9-28)

Part C: Select the correct answer for the following questions (29-38)

Part D: Work Problem (39-50) **All work must be shown step by step**

• Two different ways to submit your answer sheet

1. Scan your answer sheet and place it in ONE FILE at drop-box.

(Make sure it is not zipped into one file.)

1. Use
*…show more content…*

28 Events are independent when the occurrence of one event has no effect on the probability that another will occur. Part C: Multiple Choice (29–38)

Questions 29-33 refer to the following frequency distribution:

Annual Income Number of households under $10,000 20

$10,000 – under $20,000 45

$20,000 – under $30,000 70

$30,000 – under $40,000 30

$40,000 – under $50,000 15

$50,000 – under $60,000 12

$60,000 – under $70,000 8

Total 200

• What is the frequency of the $20,000-under $30,000 class?

1. 20 b. 45 c. 70 d. 30 • What is the width of each class?

1. $20,000 b. $5,000 c. $60,000 d. $10,000 • What is the mid-point for the $40,000-under $50,000 class?

1. $45,000 b. $40,000 c. $42,000 d. 15 • If we were to convert these data to a relative frequency distribution, what value would be associated with the $50,000-under $60,000 class?

1. 0.96 b. 0.06 c. 0.04 d. 0.12 • For a cumulative frequency distribution (less than or within), what value would be associated with the $30,000-under $40,000 class?

1. 30 b. 35 c. 165 d. 135 • For the value 10, 40, 20, 50, and 40, the value of the arithmetic mean is

34. 32 b. 40 c. 30 d. 34.5 • For the data values, 20, 31, 45, 54, 38, 33, 22, 45, and 17, the mode is

1. 33 b. 34 c. 38 d. 45 • The simplest

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