Chi-square is calculated by summing the[(_____ -_____)2 divided by _____].

A) observed; expected; observed B) expected; observed; observed C) observed; expected; expected D) observed; observed; expected A) observed; expected; observed B) expected; observed; observed C) observed; expected; expected D) observed; observed; expected

Exam 8: Introduction to Inferential Statistics

A researcher in interested in whether students who are musicians have higher intelligence test scores than students in the general population.The researcher predicts that playing a musical instrument is associated with higher intelligence test scores.This is a _____-tailed test and the z_cv is _____.

(Multiple Choice)

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Question 21

The standard error of the mean is calculated by dividing _ by _.

(Multiple Choice)

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Question 22

Chi-square is calculated by summing the[(___ -_)² divided by ___].

(Multiple Choice)

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Question 23

Assume that the average person in America weighs 150 pounds ( $\mu$ ).You want to determine whether college students weigh less than the average American.Following are the weights collected on a sample of college students: 120,105,166,170,145,149,135,115,168,138.

(Essay)

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Question 24

A researcher in interested in whether students who attend private elementary schools do any better on a standard test of intelligence than the general population of elementary school children.A random sample of 75 students at a private elementary school is tested and has a mean intelligence test score of 103.5.The average for the general population of elementary school children is 100 ( $\sigma$ = 15).

(Essay)

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Question 25

What is a t test,when is it used,and what does it tell us?

(Essay)

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Question 26

Given: For one section of the SAT: $\mu$ = 500 and $\sigma$ = 100.The SAT was given to a sample of n=35 and the mean SAT for this sample was 536.Calculate the z-test for this sample mean.Does this sample differ significantly from the population for a two-tailed test?

(Essay)

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Question 27

In a study with 25 participants and s = 15,the estimated standard error of the mean would be

(Multiple Choice)

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Question 28

What is a z test,when is it used,and what does it tell us?

(Essay)

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Question 29

Imagine that you conducted a single-sample t-test with 12 participants.For a two-tailed test,the t_cv at $\alpha$ = .05 would be

(Multiple Choice)

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Question 30

Nonparametric is to parametric as _ is to _.

(Multiple Choice)

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Question 31

The sampling distribution is a distribution of __ means based on random _ of a fixed size from a ___.

(Multiple Choice)

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Question 32

In a study with 16 participants and s = 10,the estimated standard error of the mean would be

(Multiple Choice)

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Question 33

The _____ distribution is a set of distributions that,although symmetrical and bell-shaped,are not normally distributed.

(Multiple Choice)

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Question 34

Which of the following is not an assumption of the z-test?

(Multiple Choice)

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Question 35

A distribution of sample means based on random samples of a fixed size from a population is the _____.

(Multiple Choice)

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Question 36

According to the U.S.Bureau of the Census,75% of adults regularly drank alcohol in 1985.An investigator predicts that fewer adults drink now than drank then.A sample of 100 adults is asked about their current drinking habits and 67 report drinking and 33 report not drinking.

(Essay)

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Question 37

Imagine that you conducted a single-sample t-test with 15 participants.For a one-tailed test,the t_cv at $\alpha$ = .05 would be

(Multiple Choice)

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Question 38

Rich performed a two-tailed test for an experiment in which n=15.He could not find his t critical values table but he remembered the t_cv at df = 20.He decided to compare his t_obt to this t_cv.Is he more likely to make a Type I or a Type II error in this situation?

(Essay)

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Question 39

A researcher in interested in whether high school students who play sports have a higher or lower body mass index (BMI)than students in the general population.The researcher is unsure whether playing sports will decrease body mass (due to more calories burned)or increase body mass (due to more muscle mass).The researcher selects a sample of 60 athletes and finds that their average BMI is 22.The average (µ)in the general population of students is 22.5 with a standard deviation ( $\sigma$ )of 3.What is z_obt for this sample?

(Multiple Choice)

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Question 40

Showing 21 - 40 of 63

The standard error of the mean is calculated by dividing _ by _.

Chi-square is calculated by summing the[(___ -_)² divided by ___].

Assume that the average person in America weighs 150 pounds ( $\mu$ ).You want to determine whether college students weigh less than the average American.Following are the weights collected on a sample of college students: 120,105,166,170,145,149,135,115,168,138.

What is a t test,when is it used,and what does it tell us?

Given: For one section of the SAT: $\mu$ = 500 and $\sigma$ = 100.The SAT was given to a sample of n=35 and the mean SAT for this sample was 536.Calculate the z-test for this sample mean.Does this sample differ significantly from the population for a two-tailed test?

In a study with 25 participants and s = 15,the estimated standard error of the mean would be

What is a z test,when is it used,and what does it tell us?

Imagine that you conducted a single-sample t-test with 12 participants.For a two-tailed test,the t_cv at $\alpha$ = .05 would be

Nonparametric is to parametric as _ is to _.

The sampling distribution is a distribution of __ means based on random _ of a fixed size from a ___.

In a study with 16 participants and s = 10,the estimated standard error of the mean would be

The _____ distribution is a set of distributions that,although symmetrical and bell-shaped,are not normally distributed.

Which of the following is not an assumption of the z-test?

A distribution of sample means based on random samples of a fixed size from a population is the _____.

According to the U.S.Bureau of the Census,75% of adults regularly drank alcohol in 1985.An investigator predicts that fewer adults drink now than drank then.A sample of 100 adults is asked about their current drinking habits and 67 report drinking and 33 report not drinking.

Imagine that you conducted a single-sample t-test with 15 participants.For a one-tailed test,the t_cv at $\alpha$ = .05 would be

Rich performed a two-tailed test for an experiment in which n=15.He could not find his t critical values table but he remembered the t_cv at df = 20.He decided to compare his t_obt to this t_cv.Is he more likely to make a Type I or a Type II error in this situation?

Thinking Like a Scientist

Getting Started: Ideas, resources, and Ethics

Defining, measuring, and Manipulating Variables

Descriptive Methods

Data Organization and Descriptive Statistics

Correlational Methods and Statistics

Probability and Hypothesis Testing

The Logic of Experimental Design

Inferential Statistics: Two-Group Designs

Experimental Designs With More Than Two Levels of an Independent Variable

Complex Experimental Design

Quasi-Experimental and Single-Case Designs

Apa Communication Guidelines

Filters

Exam 8: Introduction to Inferential Statistics

The standard error of the mean is calculated by dividing _____ by _____.

Chi-square is calculated by summing the[(_____ -_____)2 divided by _____].

Assume that the average person in America weighs 150 pounds ( μ\muμ ).You want to determine whether college students weigh less than the average American.Following are the weights collected on a sample of college students: 120,105,166,170,145,149,135,115,168,138.

What is a t test,when is it used,and what does it tell us?

Given: For one section of the SAT: μ\muμ = 500 and σ\sigmaσ = 100.The SAT was given to a sample of n=35 and the mean SAT for this sample was 536.Calculate the z-test for this sample mean.Does this sample differ significantly from the population for a two-tailed test?

In a study with 25 participants and s = 15,the estimated standard error of the mean would be

What is a z test,when is it used,and what does it tell us?

Imagine that you conducted a single-sample t-test with 12 participants.For a two-tailed test,the tcv at α\alphaα = .05 would be

Nonparametric is to parametric as _____ is to _____.

The sampling distribution is a distribution of ____ means based on random _____ of a fixed size from a _____.

In a study with 16 participants and s = 10,the estimated standard error of the mean would be

The _____ distribution is a set of distributions that,although symmetrical and bell-shaped,are not normally distributed.

Which of the following is not an assumption of the z-test?

A distribution of sample means based on random samples of a fixed size from a population is the _____.

According to the U.S.Bureau of the Census,75% of adults regularly drank alcohol in 1985.An investigator predicts that fewer adults drink now than drank then.A sample of 100 adults is asked about their current drinking habits and 67 report drinking and 33 report not drinking.

Imagine that you conducted a single-sample t-test with 15 participants.For a one-tailed test,the tcv at α\alphaα = .05 would be

Rich performed a two-tailed test for an experiment in which n=15.He could not find his t critical values table but he remembered the tcv at df = 20.He decided to compare his tobt to this tcv.Is he more likely to make a Type I or a Type II error in this situation?

Thinking Like a Scientist

Getting Started: Ideas, resources, and Ethics

Defining, measuring, and Manipulating Variables

Descriptive Methods

Data Organization and Descriptive Statistics

Correlational Methods and Statistics

Probability and Hypothesis Testing

The Logic of Experimental Design

Inferential Statistics: Two-Group Designs

Experimental Designs With More Than Two Levels of an Independent Variable

Complex Experimental Design

Quasi-Experimental and Single-Case Designs

Apa Communication Guidelines

Filters

The standard error of the mean is calculated by dividing _ by _.

Chi-square is calculated by summing the[(___ -_)² divided by ___].

Assume that the average person in America weighs 150 pounds ( $\mu$ ).You want to determine whether college students weigh less than the average American.Following are the weights collected on a sample of college students: 120,105,166,170,145,149,135,115,168,138.

Given: For one section of the SAT: $\mu$ = 500 and $\sigma$ = 100.The SAT was given to a sample of n=35 and the mean SAT for this sample was 536.Calculate the z-test for this sample mean.Does this sample differ significantly from the population for a two-tailed test?

Imagine that you conducted a single-sample t-test with 12 participants.For a two-tailed test,the t_cv at $\alpha$ = .05 would be

Nonparametric is to parametric as _ is to _.

The sampling distribution is a distribution of __ means based on random _ of a fixed size from a ___.

Imagine that you conducted a single-sample t-test with 15 participants.For a one-tailed test,the t_cv at $\alpha$ = .05 would be

Rich performed a two-tailed test for an experiment in which n=15.He could not find his t critical values table but he remembered the t_cv at df = 20.He decided to compare his t_obt to this t_cv.Is he more likely to make a Type I or a Type II error in this situation?