Review

• True

• False

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CCSS.HSS.ID.A.4

Tests in Mr. Jones class have a mean score of 73 and standard deviation of 6 points. Mark scored a 68 on the test. What is his z-score?

• 0.83
• 5
• -0.83
• -5

What is the total area under the standard normal curve?

• 0

• 1/2

• 1

• 2

Set up the z score formula for the following information:

A report stated that the average number of times a cat returns to its food bowl during the day is 36. Assume the variable is normally distributed with a standard deviation of 5, and that we wish to find the percentage of cats that return to their dish less than 32 times a day.

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CCSS.HSS.ID.A.4

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

• 68%
• 32%

• 95%
• 50%

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CCSS.HSS.ID.A.4

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

• 68%
• 95%
• 99.7%
• 50%

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CCSS.HSS.ID.A.4

Which measure goes in the center of the Normal Curve?

• standard deviation

• mean

• median

• mode

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CCSS.6.SP.B.5D

CCSS.HSS.ID.A.2

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

• 25%
• 68%
• 95%
• 99.7%

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CCSS.HSS.ID.A.4

According to the empirical rule, how much of the data falls within 3 standard deviations? 

• 25%
• 68%
• 95%
• 99.7%

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CCSS.HSS.ID.A.4

1.  Which best describes the shaded part of this normal distribution graph?  

• All data that is one or higher.
• All data that is one or more standard deviations above the mean.
• All data that is between 1 and 3.
• All data that is above the mean.