CCSS.Math.Content.HSS.ID.A.4

In the formula shown, what is in the denominator?

• Sample Mean
• Individual Score
• Sample Variance
• Sample Standard Deviation

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CCSS.Math.Content.HSS.ID.A.4

Find the value for 
P(Z > 1.78)

• 0.0376
• 0.0375
• 0.0446
• 0.2420

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CCSS.Math.Content.HSS.ID.A.4

Between what two standard deviations of a normal distribution contain 68% of the data?

• one below and one above
• two below and two above
• two below and zero
• zero and two above

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CCSS.Math.Content.HSS.ID.A.4

Professional golfer John Daly is known for his long drives off the tee. Suppose his drives have a mean distance of 315 yards with a standard deviation of 12 yards. What lengths of drives will constitute the middle 60% of all of his drives?

• 303 yards to 327 yards
• 0 to 318 yards
• 312 yards to 318 yards
• 305 to 325 yards

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CCSS.Math.Content.HSS.ID.A.4

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%

• 99.7%

• 95%

• 34%

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CCSS.Math.Content.HSS.ID.A.4

The Floppy Disk Company makes 3.5 inch floppy disks (mean) for disk drives that are 3.7 inches wide. The size of a manufactures disk is normally distributed with a standard deviation of 0.1 inches. The company manufactures 1000 disks every hour. In one hour, how many disks would you expect to be between 3.4 inches and 3.7 inches?

• 34

• 135

• 68

• 815

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CCSS.Math.Content.HSS.ID.A.4

Does the interval (3, 14) support the claim that the mean of a data set is 2.9

• Yes

• No

• Not enough information.

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CCSS.Math.Content.HSS.ID.A.4

If the standard deviation of a data set is 4, what is the variance?

• 2
• 16
• 4

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CCSS.Math.Content.HSS.ID.A.4

What does this symbol represent?

• Standard Deviation

• Variance

• Mean Absolute Deviation

• Sigma

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CCSS.Math.Content.HSS.ID.A.4

During Michael Jordan's last 5 years of playing basketball, these were his average scores for points per game:

30.4, 29.6, 28.7, 22.9, 20.0

Find the mean pointsper game for those 5 years.

• 32.9

• 26.32

• 28.7

• 22.32

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CCSS.Math.Content.HSS.ID.A.4