Question 1

The probability of making a _____ error is traditionally called beta.

Accepted Answer

A) sampling 
B) Type I 
C) Type II 
D) rejection 
A) sampling 
B) Type I 
C) Type II 
D) rejection

Question 2

Describe the similarities and differences between the t distribution and the normal distribution.

Accepted Answer

The t distribution is similar to the nor

Question 3

Assume that you are comparing a sample value to a population value of 75.The non-directional alternative hypothesis would be stated as ____________________.

Accepted Answer

The answer of Assume that you are comparing a sample...

Question 4

When there is exclusive concern that the population mean differs from a value in a specified direction,we should use _____.

Accepted Answer

A) a nondirectional test 
B) a directional test 
C) a stringent á 
D) both a and c above 
A) a nondirectional test 
B) a directional test 
C) a stringent á 
D) both a and c above

Question 5

The fourth step in the one sample z test is the conversion of the observed sample mean into a z value to determine how many _____ it is away from _____,assuming the null hypothesis is true.

Accepted Answer

A) standard scores;ó 
B) standard errors;ì 
C) standard deviations;z 
A) standard scores;ó 
B) standard errors;ì 
C) standard deviations;z

Question 6

In the process of hypothesis testing,the investigator begins by stating a proposal,or hypothesis,that is assumed to be:

Accepted Answer

A) True 
 B)False

Question 7

In general,a directional test will be _____ than a corresponding nondirectional test if the actual population mean and the hypothesized population mean differ in the specified direction.

Accepted Answer

A) less accurate 
B) less powerful 
C) more practical 
D) more powerful 
A) less accurate 
B) less powerful 
C) more practical 
D) more powerful

Question 8

If the observed result of an investigation is so discrepant from the expected result that the difference cannot be attributed to chance,then the _____ hypothesis is _____.

Accepted Answer

A) alternative;rejected 
B) null;rejected 
C) alternative;accepted 
D) null;accepted 
A) alternative;rejected 
B) null;rejected 
C) alternative;accepted 
D) null;accepted

Question 9

In hypothesis-testing,the size of the portion of the tails of the sampling distribution that fall outside your critical values (i.e.,your "rejection regions")is determined by your _____.

Accepted Answer

A) alpha level 
B) beta level 
C) power level 
D) standard level 
A) alpha level 
B) beta level 
C) power level 
D) standard level

Question 10

A one-sample t test is used in situations where

Accepted Answer

A) the s is known. 
B) the s must be estimated from a sample. 
C) the alternative hypothesis is directional only. 
D) the alternative hypothesis is nondirectional only. 
A) the s is known. 
B) the s must be estimated from a sample. 
C) the alternative hypothesis is directional only. 
D) the alternative hypothesis is nondirectional only.

Question 11

The formula that we use to test the hypothesis that a simple mean was drawn from a population with µ=100 and ó=9 is _____.

Accepted Answer

A) z=(   
-ì)/N 
B) z=(   
- ì)/ ó
   
C) z=(   
-ì)/
   
D) none of these 
A) z=(   
-ì)/N 
B) z=(   
- ì)/ ó
   
C) z=(   
-ì)/
   
D) none of these

Question 12

Rejection of the null hypothesis when it is true is called a:

Accepted Answer

A) Type I error 
B) Type II error 
C) Type III error 
D) none of these 
A) Type I error 
B) Type II error 
C) Type III error 
D) none of these

Question 13

Briefly describe the steps involved in the hypothesis testing process.

Accepted Answer

In the process of hypothesis testing,the

Question 14

The confidence interval most commonly used by researchers in the behavioral sciences is the 100% confidence interval.

Accepted Answer

A) True 
 B)False

Question 15

A probability value that defines a region associated with unexpected results is known as _____.

Accepted Answer

A) alpha 
B) beta 
C) gamma 
D) 1-alpha 
A) alpha 
B) beta 
C) gamma 
D) 1-alpha

Question 16

Since they focus on two tails of the distribution,directional tests are often referred to as two-tailed tests.

Accepted Answer

A) True 
 B)False

Question 17

The Publication Manual of the American Psychological Association refers to reporting confidence intervals as the "best reporting strategy" when they are relevant to the statistical test.

Accepted Answer

A) True 
 B)False

Question 18

Which is more powerful--a directional or a nondirectional test?

Accepted Answer

In general,a directional test will be mo

Question 19

What happens when the experimental results are statistically significant?

Accepted Answer

A) The alternative hypothesis is proven. 
B) The alternative hypothesis is rejected. 
C) The null hypothesis is rejected. 
D) The null hypothesis is accepteD. 
A) The alternative hypothesis is proven. 
B) The alternative hypothesis is rejected. 
C) The null hypothesis is rejected. 
D) The null hypothesis is accepteD.

Question 20

For an alpha level of .05,an unexpected result in a one sample z test includes any sample mean occurring more than 1.96 standard errors below or 1.96 standard errors above the value of ì represented in the null hypothesis.

Accepted Answer

A) True 
 B)False

The probability of making a _____ error is traditionally called beta.

Describe the similarities and differences between the t distribution and the normal distribution.

Assume that you are comparing a sample value to a population value of 75.The non-directional alternative hypothesis would be stated as ____________________.

When there is exclusive concern that the population mean differs from a value in a specified direction,we should use _____.

The fourth step in the one sample z test is the conversion of the observed sample mean into a z value to determine how many _ it is away from _,assuming the null hypothesis is true.

In the process of hypothesis testing,the investigator begins by stating a proposal,or hypothesis,that is assumed to be:

In general,a directional test will be _____ than a corresponding nondirectional test if the actual population mean and the hypothesized population mean differ in the specified direction.

If the observed result of an investigation is so discrepant from the expected result that the difference cannot be attributed to chance,then the _ hypothesis is _.

In hypothesis-testing,the size of the portion of the tails of the sampling distribution that fall outside your critical values (i.e.,your "rejection regions")is determined by your _____.

A one-sample t test is used in situations where

The formula that we use to test the hypothesis that a simple mean was drawn from a population with µ=100 and ó=9 is _____.

Rejection of the null hypothesis when it is true is called a:

Briefly describe the steps involved in the hypothesis testing process.

The confidence interval most commonly used by researchers in the behavioral sciences is the 100% confidence interval.

A probability value that defines a region associated with unexpected results is known as _____.

Since they focus on two tails of the distribution,directional tests are often referred to as two-tailed tests.

The Publication Manual of the American Psychological Association refers to reporting confidence intervals as the "best reporting strategy" when they are relevant to the statistical test.

Which is more powerful--a directional or a nondirectional test?

What happens when the experimental results are statistically significant?

For an alpha level of .05,an unexpected result in a one sample z test includes any sample mean occurring more than 1.96 standard errors below or 1.96 standard errors above the value of ì represented in the null hypothesis.

Introduction and Mathematical Preliminaries

Frequency and Probability Distributions

Measures of Central Tendency and Variability

Percentiles,percentile Ranks,standard Scores,and the Normal Distribution

Pearson Correlation and Regression: Descriptive Aspects

Probability

Estimation and Sampling Distributions

Principles of Research Design and Statistical Preliminaries for Analyzing Bivariate Relationships

Independent Groups T-Test

Correlated Groups T-Test

One-Way Repeated Measures Analysis of Variance

Pearson Correlation and Regression: Inferential Aspects

Chi-Square Test

Nonparametric Statistics

Two-Way Between-Subjects Analysis of Variance

Overview and Extension: Statistical Tests for More Complex Designs

Filters

Exam 8: Hypothesis Testing: Inferences About a Single Mean

The probability of making a _____ error is traditionally called beta.

Describe the similarities and differences between the t distribution and the normal distribution.

Assume that you are comparing a sample value to a population value of 75.The non-directional alternative hypothesis would be stated as ____________________.

When there is exclusive concern that the population mean differs from a value in a specified direction,we should use _____.

The fourth step in the one sample z test is the conversion of the observed sample mean into a z value to determine how many _____ it is away from _____,assuming the null hypothesis is true.

In the process of hypothesis testing,the investigator begins by stating a proposal,or hypothesis,that is assumed to be:

In general,a directional test will be _____ than a corresponding nondirectional test if the actual population mean and the hypothesized population mean differ in the specified direction.

If the observed result of an investigation is so discrepant from the expected result that the difference cannot be attributed to chance,then the _____ hypothesis is _____.

In hypothesis-testing,the size of the portion of the tails of the sampling distribution that fall outside your critical values (i.e.,your "rejection regions")is determined by your _____.

A one-sample t test is used in situations where

The formula that we use to test the hypothesis that a simple mean was drawn from a population with µ=100 and ó=9 is _____.

Rejection of the null hypothesis when it is true is called a:

Briefly describe the steps involved in the hypothesis testing process.

The confidence interval most commonly used by researchers in the behavioral sciences is the 100% confidence interval.

A probability value that defines a region associated with unexpected results is known as _____.

Since they focus on two tails of the distribution,directional tests are often referred to as two-tailed tests.

The Publication Manual of the American Psychological Association refers to reporting confidence intervals as the "best reporting strategy" when they are relevant to the statistical test.

Which is more powerful--a directional or a nondirectional test?

What happens when the experimental results are statistically significant?

For an alpha level of .05,an unexpected result in a one sample z test includes any sample mean occurring more than 1.96 standard errors below or 1.96 standard errors above the value of ì represented in the null hypothesis.

Introduction and Mathematical Preliminaries

Frequency and Probability Distributions

Measures of Central Tendency and Variability

Percentiles,percentile Ranks,standard Scores,and the Normal Distribution

Pearson Correlation and Regression: Descriptive Aspects

Probability

Estimation and Sampling Distributions

Principles of Research Design and Statistical Preliminaries for Analyzing Bivariate Relationships

Independent Groups T-Test

Correlated Groups T-Test

One-Way Repeated Measures Analysis of Variance

Pearson Correlation and Regression: Inferential Aspects

Chi-Square Test

Nonparametric Statistics

Two-Way Between-Subjects Analysis of Variance

Overview and Extension: Statistical Tests for More Complex Designs

Filters

The fourth step in the one sample z test is the conversion of the observed sample mean into a z value to determine how many _ it is away from _,assuming the null hypothesis is true.

If the observed result of an investigation is so discrepant from the expected result that the difference cannot be attributed to chance,then the _ hypothesis is _.