The Confidence interval for the mean score of all 12 th -graders in the United States.

Question

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Answer 1

Question

Chapter 21, Problem 21.16CYS

To determine

To find: The Confidence interval for the mean score of all 12^th-graders in the United States.

Expert Solution & Answer

Answer to Problem 21.16CYS

To give a confidence interval for the mean score of all 12^th-graders in the United States, you would use the one-sample t interval.

Explanation of Solution

Reason for the correct answer:

Here, only one independent random sample of 12^th-graders in the United States will be used to get a confidence interval for the mean score 152 out of 300 of all 12^th-graders. Hence, the one-sample t interval is used to find the confidence interval for the mean score of all 12^th-graders in the United States.

Reason for the incorrect answer:

The two sample t interval and matched pairs t interval is incorrect options because there is only one sample (of twelfth-graders) described in the given problem.

Conclusion:

Therefore, the correct option is (c).

Statistics Concept Introduction

Introduction:

The general conditions to use the one-sample t interval are given below:

Simple random sample from the population.
Observations are from a normal population.

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Answer 2

Question

Chapter 21, Problem 21.16CYS

To determine

To find: The Confidence interval for the mean score of all 12^th-graders in the United States.

Expert Solution & Answer

Answer to Problem 21.16CYS

To give a confidence interval for the mean score of all 12^th-graders in the United States, you would use the one-sample t interval.

Explanation of Solution

Reason for the correct answer:

Here, only one independent random sample of 12^th-graders in the United States will be used to get a confidence interval for the mean score 152 out of 300 of all 12^th-graders. Hence, the one-sample t interval is used to find the confidence interval for the mean score of all 12^th-graders in the United States.

Reason for the incorrect answer:

The two sample t interval and matched pairs t interval is incorrect options because there is only one sample (of twelfth-graders) described in the given problem.

Conclusion:

Therefore, the correct option is (c).

Statistics Concept Introduction

Introduction:

The general conditions to use the one-sample t interval are given below:

Simple random sample from the population.
Observations are from a normal population.

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Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 3

Question

Chapter 21, Problem 21.16CYS

To determine

To find: The Confidence interval for the mean score of all 12^th-graders in the United States.

Expert Solution & Answer

Answer to Problem 21.16CYS

To give a confidence interval for the mean score of all 12^th-graders in the United States, you would use the one-sample t interval.

Explanation of Solution

Reason for the correct answer:

Here, only one independent random sample of 12^th-graders in the United States will be used to get a confidence interval for the mean score 152 out of 300 of all 12^th-graders. Hence, the one-sample t interval is used to find the confidence interval for the mean score of all 12^th-graders in the United States.

Reason for the incorrect answer:

The two sample t interval and matched pairs t interval is incorrect options because there is only one sample (of twelfth-graders) described in the given problem.

Conclusion:

Therefore, the correct option is (c).

Statistics Concept Introduction

Introduction:

The general conditions to use the one-sample t interval are given below:

Simple random sample from the population.
Observations are from a normal population.

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Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 4

Question

Chapter 21, Problem 21.16CYS

To determine

To find: The Confidence interval for the mean score of all 12^th-graders in the United States.

Expert Solution & Answer

Answer to Problem 21.16CYS

To give a confidence interval for the mean score of all 12^th-graders in the United States, you would use the one-sample t interval.

Explanation of Solution

Reason for the correct answer:

Here, only one independent random sample of 12^th-graders in the United States will be used to get a confidence interval for the mean score 152 out of 300 of all 12^th-graders. Hence, the one-sample t interval is used to find the confidence interval for the mean score of all 12^th-graders in the United States.

Reason for the incorrect answer:

The two sample t interval and matched pairs t interval is incorrect options because there is only one sample (of twelfth-graders) described in the given problem.

Conclusion:

Therefore, the correct option is (c).

Statistics Concept Introduction

Introduction:

The general conditions to use the one-sample t interval are given below:

Simple random sample from the population.
Observations are from a normal population.

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Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 5

Chapter 21, Problem 21.16CYS

To determine

To find: The Confidence interval for the mean score of all 12^th-graders in the United States.

Expert Solution & Answer

Answer to Problem 21.16CYS

To give a confidence interval for the mean score of all 12^th-graders in the United States, you would use the one-sample t interval.

Explanation of Solution

Reason for the correct answer:

Here, only one independent random sample of 12^th-graders in the United States will be used to get a confidence interval for the mean score 152 out of 300 of all 12^th-graders. Hence, the one-sample t interval is used to find the confidence interval for the mean score of all 12^th-graders in the United States.

Reason for the incorrect answer:

The two sample t interval and matched pairs t interval is incorrect options because there is only one sample (of twelfth-graders) described in the given problem.

Conclusion:

Therefore, the correct option is (c).

Statistics Concept Introduction

Introduction:

The general conditions to use the one-sample t interval are given below:

Simple random sample from the population.
Observations are from a normal population.

Answer 6

Chapter 21, Problem 21.16CYS

To determine

To find: The Confidence interval for the mean score of all 12^th-graders in the United States.

Expert Solution & Answer

Answer to Problem 21.16CYS

To give a confidence interval for the mean score of all 12^th-graders in the United States, you would use the one-sample t interval.

Explanation of Solution

Reason for the correct answer:

Here, only one independent random sample of 12^th-graders in the United States will be used to get a confidence interval for the mean score 152 out of 300 of all 12^th-graders. Hence, the one-sample t interval is used to find the confidence interval for the mean score of all 12^th-graders in the United States.

Reason for the incorrect answer:

The two sample t interval and matched pairs t interval is incorrect options because there is only one sample (of twelfth-graders) described in the given problem.

Conclusion:

Therefore, the correct option is (c).

Statistics Concept Introduction

Introduction:

The general conditions to use the one-sample t interval are given below:

Simple random sample from the population.
Observations are from a normal population.

Answer 7

Chapter 21, Problem 21.16CYS

To determine

To find: The Confidence interval for the mean score of all 12^th-graders in the United States.

Answer 8

Expert Solution & Answer

Answer to Problem 21.16CYS

To give a confidence interval for the mean score of all 12^th-graders in the United States, you would use the one-sample t interval.

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

Explanation of Solution

Reason for the correct answer:

Here, only one independent random sample of 12^th-graders in the United States will be used to get a confidence interval for the mean score 152 out of 300 of all 12^th-graders. Hence, the one-sample t interval is used to find the confidence interval for the mean score of all 12^th-graders in the United States.

Reason for the incorrect answer:

The two sample t interval and matched pairs t interval is incorrect options because there is only one sample (of twelfth-graders) described in the given problem.

Conclusion:

Therefore, the correct option is (c).