The correct reason for given statement.

Question

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Answer 1

Question

Chapter 20, Problem 20.17CYS

To determine

To identify: The correct reason for given statement.

Expert Solution & Answer

Answer to Problem 20.17CYS

Option (b)

Explanation of Solution

Reason for the correct option:

Prefer the t procedures to the z procedures for inference about a population mean because z procedures require that the population standard deviation is known but the t procedures are not required.

Reason for the incorrect answer:

For both test procedures, the data or observations considered as simple random sample from the population and the observations are from a normal population. Therefore,

Option (a) and Option (c) are incorrect.

Therefore, the correct option is (b), “z requires that you know the population standard deviation σ ”.

Statistics Concept Introduction

Introduction:

Conditions for inference about a one-sample t test:

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

Conditions for inference about a one-sample z test:

Simple random sample from the population.
Observations are from a normal population.
Population standard deviation is known.

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ged the variance for group 1) Different groups of male stalk-eyed flies were raised on different diets: a high nutrient corn diet vs. a low nutrient cotton wool diet. Investigators wanted to see if diet quality influenced eye-stalk length. They obtained the following data: d Diet Sample Mean Eye-stalk Length Variance in Eye-stalk d size, n (mm) Length (mm²) Corn (group 1) 21 2.05 0.0558 Cotton (group 2) 24 1.54 0.0812 =205-1.54-05T a) Construct a 95% confidence interval for the difference in mean eye-stalk length between the two diets (e.g., use group 1 - group 2).

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Answer 2

Question

Chapter 20, Problem 20.17CYS

To determine

To identify: The correct reason for given statement.

Expert Solution & Answer

Answer to Problem 20.17CYS

Option (b)

Explanation of Solution

Reason for the correct option:

Prefer the t procedures to the z procedures for inference about a population mean because z procedures require that the population standard deviation is known but the t procedures are not required.

Reason for the incorrect answer:

For both test procedures, the data or observations considered as simple random sample from the population and the observations are from a normal population. Therefore,

Option (a) and Option (c) are incorrect.

Therefore, the correct option is (b), “z requires that you know the population standard deviation σ ”.

Statistics Concept Introduction

Introduction:

Conditions for inference about a one-sample t test:

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

Conditions for inference about a one-sample z test:

Simple random sample from the population.
Observations are from a normal population.
Population standard deviation is known.

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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 20, Problem 20.17CYS

To determine

To identify: The correct reason for given statement.

Expert Solution & Answer

Answer to Problem 20.17CYS

Option (b)

Explanation of Solution

Reason for the correct option:

Prefer the t procedures to the z procedures for inference about a population mean because z procedures require that the population standard deviation is known but the t procedures are not required.

Reason for the incorrect answer:

For both test procedures, the data or observations considered as simple random sample from the population and the observations are from a normal population. Therefore,

Option (a) and Option (c) are incorrect.

Therefore, the correct option is (b), “z requires that you know the population standard deviation σ ”.

Statistics Concept Introduction

Introduction:

Conditions for inference about a one-sample t test:

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

Conditions for inference about a one-sample z test:

Simple random sample from the population.
Observations are from a normal population.
Population standard deviation is known.

Want to see more full solutions like this?

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

Answer 4

Question

Chapter 20, Problem 20.17CYS

To determine

To identify: The correct reason for given statement.

Expert Solution & Answer

Answer to Problem 20.17CYS

Option (b)

Explanation of Solution

Reason for the correct option:

Prefer the t procedures to the z procedures for inference about a population mean because z procedures require that the population standard deviation is known but the t procedures are not required.

Reason for the incorrect answer:

For both test procedures, the data or observations considered as simple random sample from the population and the observations are from a normal population. Therefore,

Option (a) and Option (c) are incorrect.

Therefore, the correct option is (b), “z requires that you know the population standard deviation σ ”.

Statistics Concept Introduction

Introduction:

Conditions for inference about a one-sample t test:

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

Conditions for inference about a one-sample z test:

Simple random sample from the population.
Observations are from a normal population.
Population standard deviation is known.

Want to see more full solutions like this?

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

Answer 5

Chapter 20, Problem 20.17CYS

To determine

To identify: The correct reason for given statement.

Expert Solution & Answer

Answer to Problem 20.17CYS

Option (b)

Explanation of Solution

Reason for the correct option:

Prefer the t procedures to the z procedures for inference about a population mean because z procedures require that the population standard deviation is known but the t procedures are not required.

Reason for the incorrect answer:

For both test procedures, the data or observations considered as simple random sample from the population and the observations are from a normal population. Therefore,

Option (a) and Option (c) are incorrect.

Therefore, the correct option is (b), “z requires that you know the population standard deviation σ ”.

Statistics Concept Introduction

Introduction:

Conditions for inference about a one-sample t test:

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

Conditions for inference about a one-sample z test:

Simple random sample from the population.
Observations are from a normal population.
Population standard deviation is known.

Answer 6

Chapter 20, Problem 20.17CYS

To determine

To identify: The correct reason for given statement.

Expert Solution & Answer

Answer to Problem 20.17CYS

Option (b)

Explanation of Solution

Reason for the correct option:

Prefer the t procedures to the z procedures for inference about a population mean because z procedures require that the population standard deviation is known but the t procedures are not required.

Reason for the incorrect answer:

For both test procedures, the data or observations considered as simple random sample from the population and the observations are from a normal population. Therefore,

Option (a) and Option (c) are incorrect.

Therefore, the correct option is (b), “z requires that you know the population standard deviation σ ”.

Statistics Concept Introduction

Introduction:

Conditions for inference about a one-sample t test:

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

Conditions for inference about a one-sample z test:

Simple random sample from the population.
Observations are from a normal population.
Population standard deviation is known.

Answer 7

Chapter 20, Problem 20.17CYS

To determine

To identify: The correct reason for given statement.

Answer 8

Expert Solution & Answer

Answer to Problem 20.17CYS

Option (b)

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

Explanation of Solution

Reason for the correct option:

Prefer the t procedures to the z procedures for inference about a population mean because z procedures require that the population standard deviation is known but the t procedures are not required.

Reason for the incorrect answer:

For both test procedures, the data or observations considered as simple random sample from the population and the observations are from a normal population. Therefore,

Option (a) and Option (c) are incorrect.

Therefore, the correct option is (b), “z requires that you know the population standard deviation σ ”.