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Probability Distributions and Expected Value

Authored by Anthony Clark

Mathematics

12th Grade

Probability Distributions and Expected Value
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10 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

What does this symbol represent?

sample mean

population standard deviation

population mean

sample mew

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Standard Normal Distribution (mean is 0 standard deviation is 1). For a randomly selected subject, find the probability of a score between 1.37 and 2.42.

0.078

0.785

0.223

0.023

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the probability of an adult male being under 62 inches tall?

95%

17%

5%

2.5%

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Adult men have a mean height of 70 inches, with a standard deviation of 4 inches.


What is the probability of an adult male being over 74 inches tall?

50%

17%

83%

33%

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the probability of an adult male being over 70 inches tall?

50%

17%

83%

33%

6.

MULTIPLE CHOICE QUESTION

1 min • 12 pts

Media Image

The table above shows a television station's advertisement sales. The distribution of sales for one 24-hour day is given. Solve for the mean. Round to the nearest hundredth.

31.80

15.68

0.20

1.00

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Is this a probability distribution?

No

Yes

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