What does the research hypothesis (H1) state in a one-sample hypothesis test?

A) The population does not have a certain characteristic. B) The population is less than the sample value. C) The sample is unlikely to be representative of the population. D) The population value is unknown but likely to be large. A) The population does not have a certain characteristic. B) The population is less than the sample value. C) The sample is unlikely to be representative of the population. D) The population value is unknown but likely to be large.

Exam 10: Hypothesis Testing With Means and Proportions: The One-Sample Case

Suppose the test statistic obtained from a one-sample hypothesis test is 3.88, and the critical region begins at Z (critical) = ±1.96. Which of the following would be the correct conclusion?

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Question 1

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From a random sample drawn from the suburbs of a large city, 60% of the respondents are bilingual. For the whole metropolitan area, 75% are bilingual. The difference between the sample and the population has been tested and the null hypothesis has been rejected. Which of the following may be concluded from these observations?

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Question 2

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Suppose that the test statistic from a one-sample hypothesis test does not fall in the critical region. Which of these statements would be a correct interpretation of this result?

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Question 3

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We want to see whether a sample of engineering professionals (n = 330) differs in their licensing examination score from the population of engineers in a professional association. The population standard deviation is unknown. What would be the degrees of freedom for this test?

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Question 4

What does ì refer to in the null hypothesis for a one-sample test?

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Question 5

A random sample of 123 students living in residence has been selected from the student body of a large university. The GPA for the student body as a whole is 2.59 and the mean for the sample is 2.47 with a standard deviation of 0.34. Is the difference statistically significant at the 0.05 level? Follow the five-step model and state all important decisions. Make sure that you interpret the results in terms of the original research question.

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Question 6

Under which of these circumstances can a one-tailed test of significance be used?

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Question 7

When might a researcher need to use proportions rather than means as the test statistic?

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Question 8

A researcher gathers a random sample of 300 kindergarten students from a local school district. A total of 86% of these students have their parents read them a book at home at least once per week. This is compared to a national estimate of 80%. Is the difference statistically significant at the level of alpha = 0.05? Follow the five-step model and state all important decisions. Make sure that you interpret the results in terms of the original research question.

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Question 9

A teacher wants to know if her students score better on a standardized test than the nationwide average. What would be an appropriate null hypothesis if she applied the one-sample test?

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Question 10

Suppose a researcher wants to test whether a sample variable is different from the value in a population. The variable of interest is NOT interval-ratio. What should the researcher do?

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Question 11

A researcher believes that the gender of fiction authors influences book sales online, but he is unwilling to say whether female writers have more new books sold or fewer new books sold relative to men. What would be the most appropriate type of research hypothesis in this case?

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Question 12

What does the research hypothesis (H₁) state in a one-sample hypothesis test?

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Question 13

A null hypothesis of "no difference" is rejected at the 0.01 level. Which of the following is a valid conclusion?

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Question 14

The 95% confidence interval of a proportion ranges from 0.22 to 0.32. Our null hypothesis was that the sample proportion does not differ from the population proportion (P_u), which is 0.27. If our research hypothesis is two-tailed, what would we conclude about a sample proportion (P_s) equal to 0.33?

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Question 15

Explain how confidence intervals can be used to convey the same information as a hypothesis test.

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Question 16

From a random sample size of 200 drawn from the suburbs of a large city, 120 respondents identify themselves as bilingual. For the whole metropolitan area, 75% of the residents classify themselves as bilingual. In this situation, what are the values for P_s and P_u respectively?

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Question 17

Suppose that we are conducting a one-tailed, single-sample, means significance test with alpha = 0.01 and with a sample of size n = 21. What would be the value for t (critical)?

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Question 18

Which of the following may be concluded if the test statistic falls in the critical region in a one-sample test of significance?

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Question 19

What is a major difference between a one-tailed significance test and a two-tailed significance test?

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Question 20

Showing 1 - 20 of 37

Suppose the test statistic obtained from a one-sample hypothesis test is 3.88, and the critical region begins at Z (critical) = ±1.96. Which of the following would be the correct conclusion?

Suppose that the test statistic from a one-sample hypothesis test does not fall in the critical region. Which of these statements would be a correct interpretation of this result?

We want to see whether a sample of engineering professionals (n = 330) differs in their licensing examination score from the population of engineers in a professional association. The population standard deviation is unknown. What would be the degrees of freedom for this test?

What does ì refer to in the null hypothesis for a one-sample test?

Under which of these circumstances can a one-tailed test of significance be used?

When might a researcher need to use proportions rather than means as the test statistic?

A teacher wants to know if her students score better on a standardized test than the nationwide average. What would be an appropriate null hypothesis if she applied the one-sample test?

Suppose a researcher wants to test whether a sample variable is different from the value in a population. The variable of interest is NOT interval-ratio. What should the researcher do?

A researcher believes that the gender of fiction authors influences book sales online, but he is unwilling to say whether female writers have more new books sold or fewer new books sold relative to men. What would be the most appropriate type of research hypothesis in this case?

What does the research hypothesis (H₁) state in a one-sample hypothesis test?

A null hypothesis of "no difference" is rejected at the 0.01 level. Which of the following is a valid conclusion?

Explain how confidence intervals can be used to convey the same information as a hypothesis test.

From a random sample size of 200 drawn from the suburbs of a large city, 120 respondents identify themselves as bilingual. For the whole metropolitan area, 75% of the residents classify themselves as bilingual. In this situation, what are the values for P_s and P_u respectively?

Suppose that we are conducting a one-tailed, single-sample, means significance test with alpha = 0.01 and with a sample of size n = 21. What would be the value for t (critical)?

Which of the following may be concluded if the test statistic falls in the critical region in a one-sample test of significance?

What is a major difference between a one-tailed significance test and a two-tailed significance test?

Introduction

Basic Descriptive Statistics: Percentages, Ratios and Rates, Tables, Charts, and Graphs

Measures of Central Tendency and Dispersion

The Normal Curve

Introduction to Inferential Statistics: Sampling and the Sampling Distribution

Estimation Procedures for Sample Means and Proportions

Hypothesis Testing With Nominal and Ordinal Variables: CHI Square

Measures of Association for Variables Measured at the Nominal Level

Measures of Association for Variables Measured at the Ordinal Level

Hypothesis Testing With Means and Proportions: The Two-Sample Case

Hypothesis Testing With More Than Two Means: One-Way Analysis of Variance

Hypothesis Testing and Measures of Association for Variables Measured at the Interval-Ratio Level

Partial Correlation and Multiple Regression and Correlation

Filters

Exam 10: Hypothesis Testing With Means and Proportions: The One-Sample Case

Suppose the test statistic obtained from a one-sample hypothesis test is 3.88, and the critical region begins at Z (critical) = ±1.96. Which of the following would be the correct conclusion?

Suppose that the test statistic from a one-sample hypothesis test does not fall in the critical region. Which of these statements would be a correct interpretation of this result?

We want to see whether a sample of engineering professionals (n = 330) differs in their licensing examination score from the population of engineers in a professional association. The population standard deviation is unknown. What would be the degrees of freedom for this test?

What does ì refer to in the null hypothesis for a one-sample test?

Under which of these circumstances can a one-tailed test of significance be used?

When might a researcher need to use proportions rather than means as the test statistic?

A teacher wants to know if her students score better on a standardized test than the nationwide average. What would be an appropriate null hypothesis if she applied the one-sample test?

Suppose a researcher wants to test whether a sample variable is different from the value in a population. The variable of interest is NOT interval-ratio. What should the researcher do?

A researcher believes that the gender of fiction authors influences book sales online, but he is unwilling to say whether female writers have more new books sold or fewer new books sold relative to men. What would be the most appropriate type of research hypothesis in this case?

What does the research hypothesis (H1) state in a one-sample hypothesis test?

A null hypothesis of "no difference" is rejected at the 0.01 level. Which of the following is a valid conclusion?

The 95% confidence interval of a proportion ranges from 0.22 to 0.32. Our null hypothesis was that the sample proportion does not differ from the population proportion (Pu), which is 0.27. If our research hypothesis is two-tailed, what would we conclude about a sample proportion (Ps) equal to 0.33?

Explain how confidence intervals can be used to convey the same information as a hypothesis test.

From a random sample size of 200 drawn from the suburbs of a large city, 120 respondents identify themselves as bilingual. For the whole metropolitan area, 75% of the residents classify themselves as bilingual. In this situation, what are the values for Ps and Pu respectively?

Suppose that we are conducting a one-tailed, single-sample, means significance test with alpha = 0.01 and with a sample of size n = 21. What would be the value for t (critical)?

Which of the following may be concluded if the test statistic falls in the critical region in a one-sample test of significance?

What is a major difference between a one-tailed significance test and a two-tailed significance test?

Introduction

Basic Descriptive Statistics: Percentages, Ratios and Rates, Tables, Charts, and Graphs

Measures of Central Tendency and Dispersion

The Normal Curve

Introduction to Inferential Statistics: Sampling and the Sampling Distribution

Estimation Procedures for Sample Means and Proportions

Hypothesis Testing With Nominal and Ordinal Variables: CHI Square

Measures of Association for Variables Measured at the Nominal Level

Measures of Association for Variables Measured at the Ordinal Level

Hypothesis Testing With Means and Proportions: The Two-Sample Case

Hypothesis Testing With More Than Two Means: One-Way Analysis of Variance

Hypothesis Testing and Measures of Association for Variables Measured at the Interval-Ratio Level

Partial Correlation and Multiple Regression and Correlation

Filters

What does the research hypothesis (H₁) state in a one-sample hypothesis test?

From a random sample size of 200 drawn from the suburbs of a large city, 120 respondents identify themselves as bilingual. For the whole metropolitan area, 75% of the residents classify themselves as bilingual. In this situation, what are the values for P_s and P_u respectively?