A researcher calculates a mean from a sample of 24 people. In analyzing her data, she states the following hypotheses: H0: μ = 20 and H1: μ ≠ 20. For α = .05, what is the appropriate critical value for her statistic?

A) 1.714 B) 2.086 C) 2.069 D) 2.064 A) 1.714 B) 2.086 C) 2.069 D) 2.064

Exam 7: Testing One Sample Mean

Use this information below to answer questions 121-122. A researcher looked at young people's Knowledge of the cost of weddings, where it's been found that many students' estimates of the cost of a wedding was less than the actual average. As a result of this finding, imagine you hypothesize that young people will underestimate the average cost of a wedding gown. To test this hypothesis, a group of college students are asked, "According to the Brides.com ( HYPERLINK "http://www.brides.com/" http://www.brides.com) 2009 American Wedding Survey, what is the average cost of a wedding gown?" The responses of some of the students in this class are summarized as: N = 28 = 2432.14 s = 1643.18 -For α = .05 (two-tailed), which of the following is an appropriate critical value?

(Multiple Choice)

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Question 61

Which of the following can be a negative number in testing the mean of a sample?

(Multiple Choice)

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Question 62

A '≠' symbol in the hypothesis implies this hypothesis is .

(Multiple Choice)

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Question 63

Holding all else constant, as sample size increases, the value of the standard error of the mean ______.

(Multiple Choice)

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Question 64

A population has a mean of 15.21 and a standard deviation of 1.56. For a sample of N = 20, what is the population standard error of the mean ?

(Multiple Choice)

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Question 65

A researcher calculates a mean from a sample of 24 people. In analyzing her data, she states the following hypotheses: H₀: μ = 20 and H₁: μ ≠ 20. For α = .05, what is the appropriate critical value for her statistic?

(Multiple Choice)

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Question 66

Imagine the value of a t-statistic is less than the critical value for α = .01 but greater than the critical value for α = .05. Which of the following is the MOST appropriate way to report the level of significance?

(Multiple Choice)

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Question 67

You determine whether the probability of a statistic such as the t-statistic is less than .01 (p < .01) ______.

(Multiple Choice)

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Question 68

The sampling distribution of the mean helps ______.

(Multiple Choice)

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Question 69

Although their formulas are similar, one difference between the z-score (z) and the t-statistic (t) is that ______.

(Multiple Choice)

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Question 70

The sampling distribution of the mean ______.

(Multiple Choice)

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Question 71

When reporting the results of a z-test, you should state whether or not the null hypothesis was rejected.

(True/False)

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Question 72

The of the sampling distribution of the mean may be represented by .

(Multiple Choice)

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Question 73

If I wanted to estimate the variability of sample means , I would calculate ______.

(Multiple Choice)

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Question 74

If a calculated z-statistic is equal to 2.61, you would report that the sample mean is significantly different from the population mean at the .01 level of significance.

(True/False)

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Question 75

The statement "µ ≠ 3" would be part of a ______.

(Multiple Choice)

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Question 76

A alternative hypothesis such as is also referred to as __.

(Multiple Choice)

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Question 77

A study based on a sample of 14 participants calculates a value of 2.58 for the t-test for a single mean. For alpha (α) = .05 (two-tailed), which of the following is the correct way to present this analysis?

(Multiple Choice)

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Question 78

Which of the following is a correctly stated null hypothesis?

(Multiple Choice)

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Question 79

A alternative hypothesis (one that may have a symbol) is also referred to as __.

(Multiple Choice)

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Question 80

Showing 61 - 80 of 134

Which of the following can be a negative number in testing the mean of a sample?

A '≠' symbol in the hypothesis implies this hypothesis is .

Holding all else constant, as sample size increases, the value of the standard error of the mean ______.

A population has a mean of 15.21 and a standard deviation of 1.56. For a sample of N = 20, what is the population standard error of the mean ?

A researcher calculates a mean from a sample of 24 people. In analyzing her data, she states the following hypotheses: H₀: μ = 20 and H₁: μ ≠ 20. For α = .05, what is the appropriate critical value for her statistic?

Imagine the value of a t-statistic is less than the critical value for α = .01 but greater than the critical value for α = .05. Which of the following is the MOST appropriate way to report the level of significance?

You determine whether the probability of a statistic such as the t-statistic is less than .01 (p < .01) ______.

The sampling distribution of the mean helps ______.

Although their formulas are similar, one difference between the z-score (z) and the t-statistic (t) is that ______.

The sampling distribution of the mean ______.

When reporting the results of a z-test, you should state whether or not the null hypothesis was rejected.

The of the sampling distribution of the mean may be represented by .

If I wanted to estimate the variability of sample means , I would calculate ______.

If a calculated z-statistic is equal to 2.61, you would report that the sample mean is significantly different from the population mean at the .01 level of significance.

The statement "µ ≠ 3" would be part of a ______.

A alternative hypothesis such as is also referred to as __.

A study based on a sample of 14 participants calculates a value of 2.58 for the t-test for a single mean. For alpha (α) = .05 (two-tailed), which of the following is the correct way to present this analysis?

Which of the following is a correctly stated null hypothesis?

A alternative hypothesis (one that may have a symbol) is also referred to as __.

Introduction to Statistics

Examining Data: Tables and Figures

Measures of Central Tendency

Measures of Variability

Normal Distributions

Probability and Hypothesis Testing

Estimating the Mean of a Population

Testing the Difference Between Two Means

Errors in Hypothesis Testing, Statistical Power, and Effect Size

One-Way Analysis of Variance Anova

Two-Way Analysis of Variance Anova

Correlation

Linear Regression and Multiple Correlation

Chi-Square

Filters

Exam 7: Testing One Sample Mean

Which of the following can be a negative number in testing the mean of a sample?

A '≠' symbol in the ______ hypothesis implies this hypothesis is ______.

Holding all else constant, as sample size increases, the value of the standard error of the mean ______.

A population has a mean of 15.21 and a standard deviation of 1.56. For a sample of N = 20, what is the population standard error of the mean ?

A researcher calculates a mean from a sample of 24 people. In analyzing her data, she states the following hypotheses: H0: μ = 20 and H1: μ ≠ 20. For α = .05, what is the appropriate critical value for her statistic?

Imagine the value of a t-statistic is less than the critical value for α = .01 but greater than the critical value for α = .05. Which of the following is the MOST appropriate way to report the level of significance?

You determine whether the probability of a statistic such as the t-statistic is less than .01 (p < .01) ______.

The sampling distribution of the mean helps ______.

Although their formulas are similar, one difference between the z-score (z) and the t-statistic (t) is that ______.

The sampling distribution of the mean ______.

When reporting the results of a z-test, you should state whether or not the null hypothesis was rejected.

The ______ of the sampling distribution of the mean may be represented by ______.

If I wanted to estimate the variability of sample means , I would calculate ______.

If a calculated z-statistic is equal to 2.61, you would report that the sample mean is significantly different from the population mean at the .01 level of significance.

The statement "µ ≠ 3" would be part of a ______.

A ______ alternative hypothesis such as ______ is also referred to as ______.

A study based on a sample of 14 participants calculates a value of 2.58 for the t-test for a single mean. For alpha (α) = .05 (two-tailed), which of the following is the correct way to present this analysis?

Which of the following is a correctly stated null hypothesis?

A ______ alternative hypothesis (one that may have a ______ symbol) is also referred to as ______.

Introduction to Statistics

Examining Data: Tables and Figures

Measures of Central Tendency

Measures of Variability

Normal Distributions

Probability and Hypothesis Testing

Estimating the Mean of a Population

Testing the Difference Between Two Means

Errors in Hypothesis Testing, Statistical Power, and Effect Size

One-Way Analysis of Variance Anova

Two-Way Analysis of Variance Anova

Correlation

Linear Regression and Multiple Correlation

Chi-Square

Filters

A '≠' symbol in the hypothesis implies this hypothesis is .

A researcher calculates a mean from a sample of 24 people. In analyzing her data, she states the following hypotheses: H₀: μ = 20 and H₁: μ ≠ 20. For α = .05, what is the appropriate critical value for her statistic?

The of the sampling distribution of the mean may be represented by .

A alternative hypothesis such as is also referred to as __.

A alternative hypothesis (one that may have a symbol) is also referred to as __.