If you fail to reject the H0 when H0 is false then you made a _____ with a probability equal to ______.

A) Type I error;á B) Type II error;â C) Type I error;â D) Type II error,á A) Type I error;á B) Type II error;â C) Type I error;â D) Type II error,á

Exam 8: Hypothesis Testing: Inferences About a Single Mean

In the Applications to the Analysis of Social Problems section of Chapter 8,the confidence intervals for the mean age at which mothers think parents should talk with children about sex and the confidence intervals for the mean age at which mothers think parents should talk with children about birth control were relatively narrow.What does this mean?

(Multiple Choice)

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Question 21

When calculating ,we are calculating the ____________________.number of standard errors that the sample mean is from m.

(Short Answer)

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Question 22

If the observed and expected results of some experiment are not identical,then the null hypothesis (no differences)should be ______.

(Multiple Choice)

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Question 23

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

(True/False)

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Question 24

The one-sample t-test is robust to violations against which of the following assumptions?

(Multiple Choice)

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Question 25

A researcher performs a hypothesis test and rejects the null hypothesis.If,in reality,the null hypothesis should not have been rejected,then the researcher has made a

(Multiple Choice)

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Question 26

Type II errors have a probability of occurring equal to _____.

(Multiple Choice)

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Question 27

If you fail to reject the H₀ when H₀ is false then you made a _ with a probability equal to __.

(Multiple Choice)

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Question 28

In the sampling distribution of the mean for the z distribution,95% of all sample means will fall between ____________________ standard errors from the mean.

(Short Answer)

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Question 29

The one-sample t test is based on the assumption that:

(Multiple Choice)

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Question 30

In a one-sample z-test,the term "statistically significant difference" tells you _____.

(Multiple Choice)

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Question 31

Directional tests are often referred to as :

(Multiple Choice)

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Question 32

Distinguish between directional and nondirectional tests.

(Essay)

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Question 33

The most likely conclusion to make if your observed z exceeds the critical value is the _____.

(Multiple Choice)

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Question 34

Based on the Method of Presentation section of Chapter 8,suppose you obtained a statistically significant t value of 2.5 with 15 subjects using an alpha level of .05.How would this be reported in a psychological journal?

(Multiple Choice)

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Question 35

When the sample size is less than 40,the z and the t distributions are almost identical.

(True/False)

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Question 36

If the null hypothesis is rejected,the results of a statistical test are said to be statistically and practically significant.

(True/False)

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Question 37

A directional test is one designed to detect differences from a hypothesized population mean score in one direction only.

(True/False)

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Question 38

When researcher states that an observed value will be higher or lower than a comparison value,she must provide a ____________________.alternative hypothesis.

(Short Answer)

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Question 39

A sampling distribution of means based on all possible random samples of N=25,drawn from a population having a µ of 25 and a ó of 4,will have a mean of _ and standard deviation of _.

(Multiple Choice)

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Question 40

Showing 21 - 40 of 160

When calculating ,we are calculating the ____________________.number of standard errors that the sample mean is from m.

If the observed and expected results of some experiment are not identical,then the null hypothesis (no differences)should be ______.

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

The one-sample t-test is robust to violations against which of the following assumptions?

A researcher performs a hypothesis test and rejects the null hypothesis.If,in reality,the null hypothesis should not have been rejected,then the researcher has made a

Type II errors have a probability of occurring equal to _____.

If you fail to reject the H₀ when H₀ is false then you made a _ with a probability equal to __.

In the sampling distribution of the mean for the z distribution,95% of all sample means will fall between ____________________ standard errors from the mean.

The one-sample t test is based on the assumption that:

In a one-sample z-test,the term "statistically significant difference" tells you _____.

Directional tests are often referred to as :

Distinguish between directional and nondirectional tests.

The most likely conclusion to make if your observed z exceeds the critical value is the _____.

Based on the Method of Presentation section of Chapter 8,suppose you obtained a statistically significant t value of 2.5 with 15 subjects using an alpha level of .05.How would this be reported in a psychological journal?

When the sample size is less than 40,the z and the t distributions are almost identical.

If the null hypothesis is rejected,the results of a statistical test are said to be statistically and practically significant.

A directional test is one designed to detect differences from a hypothesized population mean score in one direction only.

When researcher states that an observed value will be higher or lower than a comparison value,she must provide a ____________________.alternative hypothesis.

A sampling distribution of means based on all possible random samples of N=25,drawn from a population having a µ of 25 and a ó of 4,will have a mean of _ and standard deviation of _.

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

When calculating ,we are calculating the ____________________.number of standard errors that the sample mean is from m.

If the observed and expected results of some experiment are not identical,then the null hypothesis (no differences)should be ______.

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

The one-sample t-test is robust to violations against which of the following assumptions?

A researcher performs a hypothesis test and rejects the null hypothesis.If,in reality,the null hypothesis should not have been rejected,then the researcher has made a

Type II errors have a probability of occurring equal to _____.

If you fail to reject the H0 when H0 is false then you made a _____ with a probability equal to ______.

In the sampling distribution of the mean for the z distribution,95% of all sample means will fall between ____________________ standard errors from the mean.

The one-sample t test is based on the assumption that:

In a one-sample z-test,the term "statistically significant difference" tells you _____.

Directional tests are often referred to as :

Distinguish between directional and nondirectional tests.

The most likely conclusion to make if your observed z exceeds the critical value is the _____.

Based on the Method of Presentation section of Chapter 8,suppose you obtained a statistically significant t value of 2.5 with 15 subjects using an alpha level of .05.How would this be reported in a psychological journal?

When the sample size is less than 40,the z and the t distributions are almost identical.

If the null hypothesis is rejected,the results of a statistical test are said to be statistically and practically significant.

A directional test is one designed to detect differences from a hypothesized population mean score in one direction only.

When researcher states that an observed value will be higher or lower than a comparison value,she must provide a ____________________.alternative hypothesis.

A sampling distribution of means based on all possible random samples of N=25,drawn from a population having a µ of 25 and a ó of 4,will have a mean of _____ and standard deviation of _____.

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

If you fail to reject the H₀ when H₀ is false then you made a _ with a probability equal to __.

A sampling distribution of means based on all possible random samples of N=25,drawn from a population having a µ of 25 and a ó of 4,will have a mean of _ and standard deviation of _.