Normal Distributions Probability

Normal Distributions Probability

12th Grade

20 Qs

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Normal Distributions Probability

Normal Distributions Probability

Assessment

Quiz

Mathematics

12th Grade

Practice Problem

Hard

Created by

Anthony Clark

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20 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 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%

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The shelf life of a particular dairy product is normally distributed with a mean of 12 days and a standard deviation of 3 days.

About what percent of the products last between 12 and 15 days?

68%

34%

16%

2.5%

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

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

0.078

0.785

0.223

0.023

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Red blood cell counts of women are normally distributed with a mean of 4.577 and a standard deviation of 0.382.  What percentage of women have red blood cell counts in the normal range from 4.2 to 5.4?

82.3%

77.8%

72.6%

68%

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Abigail is analyzing the test scores of her class, which are normally distributed. What percent of the scores fall within the shaded region?

68%

95%

99.7%

50%

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

What percent of people within 1 standard deviation of the mean?

99.7

34

68

95

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

This data is normally distributed.  What percent of the data is in the shaded region?

68%

95%

99.7%

50%

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