Ms. Sapough wants to know whether students at Norcross prefer football or baseball. What is the bias in the following sampling methods? She surveys the football team.

The sample is not representative of the entire student body.

The sample includes students from other schools.

The sample is randomly selected.

Ms. Sapough wants to know whether students at Norcross prefer football or baseball. Explain the bias in the following sampling methods. She surveys the boys and girls soccer teams.

The sample is biased because it only includes soccer players.

The sample is unbiased because it includes both boys and girls.

The sample is biased because it includes students from Norcross.

The sample is unbiased because it includes students who play sports.

Describe a group to survey that would best represent the population.

A random sample of individuals from various demographics

A group of people from a single neighborhood

A selection of volunteers from a specific age group

A group of experts in the field

Statistics and Probability Questions

Quiz

•

Mathematics

•

11th Grade

•

Practice Problem

•

Hard

•

CCSS

HSS.ID.A.4, 7.SP.A.1, 6.SP.A.3

+14

Standards-aligned

Gemsy Lydia Jeganath Manohar

Used 1+ times

FREE Resource

33 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Group A ran every day for a month. Group B did not. The numbers shown are the times (in minutes) it took each member to run five kilometers. Group A: 19, 20, 18, 25, 14, 12, 18, 21, 10, 11, 13 Group B: 21, 22, 18, 19, 23, 18, 26, 30, 29, 27, 21 What is the mean time for Group A?

16.5 minutes

17.0 minutes

18.0 minutes

19.0 minutes

Tags

CCSS.6.SP.B.5C

2.

OPEN ENDED QUESTION

3 mins • 1 pt

Which group had the higher mean. What does that tell you about the runners?

Evaluate responses using AI:

OFF

Tags

CCSS.HSS.ID.A.3

3.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Which group had the higher standard deviation. What does that tell you about the runners?

Group A had the higher standard deviation, indicating more variability in their running times.

Group B had the higher standard deviation, indicating more consistency in their running times.

Group A had the higher standard deviation, indicating more consistency in their running times.

Group B had the higher standard deviation, indicating more variability in their running times.

4.

OPEN ENDED QUESTION

3 mins • 1 pt

On average Megan sends 45 texts a day, with a standard deviation of 3 texts. Draw this information on a normal curve and label the percentages.

Evaluate responses using AI:

OFF

Tags

CCSS.HSS.ID.A.4

5.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

What is the probability that she will send between 39 and 51 texts a day?

0.15

0.25

0.35

0.45

Tags

CCSS.HSS.ID.A.4

6.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

What is the probability that she will send more than 51 texts a day?

0.1

0.3

0.5

0.7

Tags

CCSS.HSS.ID.A.4

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

What is the probability that she will send less than 42 texts a day?

0.1

0.3

0.5

0.7

Tags

CCSS.HSS.ID.A.4

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Statistics and Probability Questions

33 questions

Group A ran every day for a month. Group B did not. The numbers shown are the times (in minutes) it took each member to run five kilometers. Group A: 19, 20, 18, 25, 14, 12, 18, 21, 10, 11, 13 Group B: 21, 22, 18, 19, 23, 18, 26, 30, 29, 27, 21 What is the mean time for Group A?

Which group had the higher mean. What does that tell you about the runners?

Which group had the higher standard deviation. What does that tell you about the runners?

On average Megan sends 45 texts a day, with a standard deviation of 3 texts. Draw this information on a normal curve and label the percentages.

What is the probability that she will send between 39 and 51 texts a day?

What is the probability that she will send more than 51 texts a day?

What is the probability that she will send less than 42 texts a day?

A team’s annual carwash fundraiser usually raises $600, with a standard deviation of $40. Find the probability, for each amount of annual fundraiser money contributed. (know with z score table & technology) Less than $680 _______

A team’s annual carwash fundraiser usually raises $600, with a standard deviation of $40. Find the probability, for each amount of annual fundraiser money contributed. (know with z score table & technology) Greater than $520 _______

Between $560 and $720 _______

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