Normal Distribution

Normal Distribution

Assessment

Assessment

Created by

Sheri Eastman

Mathematics

9th Grade - University

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16 questions

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1.

Multiple Choice

2 mins

1 pt

In a survey of men in the United States (ages 20-29), the mean height was 69.6 inches with a standard deviation of 3.0 inches. Find the minimum height in the top 22%.

69.37 in 

67.58 in 

73.12 in 

2.

Multiple Choice

1 min

1 pt

The 40 yards sprint times for a soccer team are found to be normally distributed with a mean of 5.2 seconds and a standard deviation of 0.3 seconds.  What is the z-score for a player who runs a time of 5.6 seconds?

-1.33

1.33

0.88

1.02

3.

Multiple Choice

5 mins

1 pt

The 40 yards sprint times for a soccer team are found to be normally distributed with a mean of 5.2 seconds and a standard deviation of 0.3 seconds.  What is the z-score for a player who runs a time of 4.6 seconds?

0.83

1.07

-2

-1.07

4.

Multiple Choice

1 min

1 pt

The mean number of accidents a week at a company is 6.4 with a standard deviation of 1.5.  What proportion of weeks would you expect to have less than 5 accidents?

0.6915

0.1762

0.8238

-0.93

5.

Multiple Choice

5 mins

1 pt

The mean number of accidents a week at a company is 6.4 with a standard deviation of 1.5.  What proportion of weeks would you expect to have more than 7 accidents?

0.3446

0.2856

0.4

0.6554

6.

Multiple Choice

5 mins

1 pt

The mean GPA of students in a course at UCDavis is 3.2 with a standard deviation of 0.3. What percent of students in the course have a GPA between  2.9 and 3.8? 

81.5%

47.5%

68%

95%

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