Unit 7 Test Review

A local library is considering opening one hour earlier on Saturdays. Select the option that is biased.

• Distribute a survey to 50 people chosen at random from its database

• Distribute a survey to the 1st 50 people entering the library next Saturday

Tags

CCSS.RL.11-12.6

Which measure would be most appropriate to represent the center of the data set?

• mean

• median

• mode

• range

• mean and median

Tags

CCSS.6.SP.B.5D

CCSS.HSS.ID.A.2

Which is an accurate comparison?

• The mean is likely less than the median because the data is skewed to the right.

• The mean is likely greater than the median because the data is skewed to the right.

• The mean is likely less than the median because the data is skewed to the left.

• The mean is likely greater than the median because the data is skewed to the left.

Tags

CCSS.6.SP.B.5D

CCSS.HSS.ID.A.2

Watch the review video for question 4.

• It is not possible to put this question

• on a quizizz game!

• Everyone should watch the video for

• number 4!

A spinner has sections numbered 1 to 4. The spinner is spun 100 times. The probability distribution graph shows the results.

What is the probability of landing a number that is at least 3?

• 0.42

• 0.56

• 0.45

• 0.12

Tags

CCSS.HSS.MD.A.3

CCSS.HSS.MD.A.4

Which of the following is a binomial experiment?

• Spin the wheel multiple times and record when it lands on a 6.

• Spin the wheel until it lands on a 6.

• Spin the wheel 20 times and record what number it lands on.

• Spin the wheel 20 times and record if it lands on a 6.

The amount of coffee that gets poured into small coffee cups at one shop is found to be normally distributed with a mean of 7.3 oz and a standard deviation of 0.25 oz.

What is the z-score of a cup filled with 8 oz of coffee?

• 2

• 3

• 2.5

• 2.8

Tags

CCSS.HSS.ID.A.4

The height of adult males in a population is normally distributed with a mean of 69 inches and a standard deviation of 2.5 inches. What percent of adult males have a height between 61.5 and 76.5 inches?

(Hint: fill in the graph!)

• 34%

• 84%

• 99.7%

• 100%

Tags

CCSS.HSS.ID.A.4

Find the probability that the z-score is less than -1.54 as a percent or P(z < -1.54):

• 0.06%

• 6%

• 90%

• 94%

Tags

CCSS.HSS.ID.A.4

The scores on a standardized test are normally distributed with a mean of 500 & a standard deviation of 60. Jake scored 520 on the test.

Find the percent of students that had a score that was greater than or equal to Jake’s.

• 20%

• 30%

• 37%

• 63%

Tags

CCSS.HSS.ID.A.4