Math 4 Unit 7 Review

The normal curve is symmetrical about the mean.

• True
• False

Tags

CCSS.HSS.ID.A.4

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

• 50%

• 68%

• 95%

• 99.7%

Tags

CCSS.HSS.ID.A.4

What is the the total area under the standard normal distribution curve?

• 100
• 25
• .5
• 1

Tags

CCSS.7.SP.C.7A

If this is the graph of data normally distributed with a mean of 30 and a standard deviation of 5, what label (number) is written at the blue circle?

• 40

• 35

• 45

• 50

Tags

CCSS.HSS.ID.A.4

If this is the graph of data normally distributed with a mean of 30 and a standard deviation of 5, what label (number) is written at the blue circle?

• 20

• 15

• 40

• 30

Tags

CCSS.HSS.ID.A.4

35 is

• mean

• variance

• standard deviation

• range

Tags

CCSS.HSS.ID.A.4

If the average annual precipitation in Phoenix is 29 with a standard deviation of 3, what is the "normal" range of precipitation (68%)?

• 26-32

• 3-29

• 26-29

• 39-32

Tags

CCSS.HSS.ID.A.4

The ages of golfers are normally distributed, with a mean of 38 and a standard deviation of 4.

Find the percentage of golfers that are between 30 and 46 years old.

• 68%

• 94%

• 95%

• 99.7%

Tags

CCSS.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%
• 34%
• 16%
• 2.5%

Tags

CCSS.HSS.ID.A.4

A line up for tickets to a local concert had an average (mean) waiting time of 20 minutes with a standard deviation of 4 minutes. If 2000 ticket buyers were in line, how many of them would expect to wait for less than 16 minutes?

• 1750

• 30

• 320

• 100

Tags

CCSS.HSS.ID.A.4