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Statistical Inferences Unit Reivew

Authored by Stephanie Gebhard

Mathematics

9th - 12th Grade

CCSS covered

Used 4+ times

Statistical Inferences Unit Reivew
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13 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A recent survey found that out of 400 random American adults, 89% pay their bills on time. The margin of error in this survey was 2%. What is the interval of values in which the truth is likely found?

89% - 91%

87% - 89%

87% - 91%

388 - 402

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.4

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

How do we reduce variability?

Increase randomness.

Increase sample size.

Decrease randomness.

Decrease sample size.

Tags

CCSS.HSS.IC.B.3

CCSS.HSS.IC.B.5

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Why is a sample of 1000 people better than a sample of 100 people?

It reduces the margin of error.

It decreases bias.

Having more people is always better.

More people means that our results are more accurate.

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.4

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A recent survey of 2000 high schoolers found that 80% use their phones more than 4 hours a day on average, with a standard deviation of 1%. What is the interval for which we could expect to find the truth mean of the population?

2%

78% - 82%

93% - 97%

82%

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.4

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Find the area of the shaded region.

16%

84%

68%

34%

Tags

CCSS.HSS.ID.A.4

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

A difference of -9 degrees is likely ______

by grouping

by treatment

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

A difference of $15 is likely ______

by grouping

by treatment

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