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Empirical Rule Practice

Authored by Anthony Clark

Mathematics

12th Grade

Empirical Rule Practice
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15 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

According to the empirical rule, what percentage of data falls within 1 standard deviation of the mean?

25%

68%

95%

99.7%

2.

MULTIPLE CHOICE QUESTION

1 min • 5 pts

What percent of a normal distribution lies outside of ±3 standard deviations?

99.7%

.15%

.3%

100%

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

According to the empirical rule, how much of the data falls within 2 standard deviations of the mean?

25%

68%

95%

99.7%

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

According to the empirical rule, how much of the data falls within 2 standard deviations? 

25%

68%

95%

99.7%

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

In a factory, the weight of the concrete poured into a mold by a machine follows a normal distribution with a mean of 1150 pounds and a standard deviation of 22 pounds. Approximately 99.7% of molds filled by this machine will hold weights in what interval? 

1084 to 1216 pounds 

1106 to 1150 pounds 

1106 to 1194 pounds 

1128 to 1172 pounds

6.

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%

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

What percent of people within 3 standard deviations of the mean?

99.7

34

68

95

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