A) The estimated population standard deviation B) The population standard deviation C) The estimated standard error of the mean D) The standard error of the mean A) The estimated population standard deviation B) The population standard deviation C) The estimated standard error of the mean D) The standard error of the mean

Exam 11: Performing the One-Sample T-Test and Testing Correlation Coefficients

A study with 46 participants investigated whether there was a relationship between one's attitude toward giving blood and the number of times one has given blood in a year.The correlation coefficient was r = +0.56.The is _ and the investigator should _.

(Multiple Choice)

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Question 41

What happens to the t-distribution as the sample size increases?

(Multiple Choice)

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Question 42

A two-tailed t-test was conducted for and .Using was compared to .What is the correct 95% confidence interval for ?

(Multiple Choice)

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Question 43

Using the data given below,perform a one-tailed t-test with .Use . 74 73 75 70 71 70 72 74 75 74 72 70 71 73

(Multiple Choice)

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Question 44

Which of the following is one of the assumptions for hypothesis testing of the Pearson correlation coefficient?

(Multiple Choice)

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Question 45

If a sample mean has a value equal to µ,the corresponding value of t will be equal to

(Multiple Choice)

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Question 46

When we hear that a recent survey found 36% of adults had used an on-line dating service,the is the

(Multiple Choice)

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Question 47

Which kind of estimation is performed when we claim that a population mean is equal to the sample mean?

(Multiple Choice)

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Question 48

Some people claim that psychology is common sense.If this is true,then students who have not taken psychology courses should be able to predict the outcomes of experiments as well as psychology majors.If it is not,nonpsychology students should perform worse than psychology students.Psychology students typically predict outcomes with  = 75% accuracy.A sample of 15 nonpsychology students predicted with accuracy.The .What is the 95% confidence interval for nonpsychology students?

(Multiple Choice)

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Question 49

What is ?

(Multiple Choice)

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Question 50

Suppose you correlate reading levels with the ages of 30 elementary school children.You compute and find it to be 0.72,which is a significant correlation coefficient.Which of the following is the most appropriate conclusion?

(Multiple Choice)

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Question 51

Which of the following would increase the power of a significance test for correlation?

(Multiple Choice)

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Question 52

In a study involving 22 participants,you have found that the Pearson correlation coefficient between the amount of Chemical J2 in the bloodstream and roller coaster enjoyment is 0.53.Use a two-tailed test and to determine if this is a significant correlation coefficient.

(Multiple Choice)

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Question 53

How many degrees of freedom do we have in significance testing of r?

(Multiple Choice)

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Question 54

What is for a one-tailed test for a negative when 30 participants are tested? Use  = 0.05.

(Multiple Choice)

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Question 55

The logic behind computing a confidence interval is to compute the highest and lowest values of a _ mean that are not significantly different from the _.

(Multiple Choice)

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Question 56

If all other factors are held constant,increasing the level of confidence will have what kind of effect on the width of a confidence interval?

(Multiple Choice)

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Question 57

Showing 41 - 57 of 57

A study with 46 participants investigated whether there was a relationship between one's attitude toward giving blood and the number of times one has given blood in a year.The correlation coefficient was r = +0.56.The is _ and the investigator should _.

What happens to the t-distribution as the sample size increases?

A two-tailed t-test was conducted for and .Using was compared to .What is the correct 95% confidence interval for ?

Using the data given below,perform a one-tailed t-test with .Use . 74 73 75 70 71 70 72 74 75 74 72 70 71 73

Which of the following is one of the assumptions for hypothesis testing of the Pearson correlation coefficient?

If a sample mean has a value equal to µ,the corresponding value of t will be equal to

When we hear that a recent survey found 36% of adults had used an on-line dating service,the is the

Which kind of estimation is performed when we claim that a population mean is equal to the sample mean?

What is ?

Suppose you correlate reading levels with the ages of 30 elementary school children.You compute and find it to be 0.72,which is a significant correlation coefficient.Which of the following is the most appropriate conclusion?

Which of the following would increase the power of a significance test for correlation?

In a study involving 22 participants,you have found that the Pearson correlation coefficient between the amount of Chemical J2 in the bloodstream and roller coaster enjoyment is 0.53.Use a two-tailed test and to determine if this is a significant correlation coefficient.

How many degrees of freedom do we have in significance testing of r?

What is for a one-tailed test for a negative when 30 participants are tested? Use  = 0.05.

The logic behind computing a confidence interval is to compute the highest and lowest values of a _ mean that are not significantly different from the _.

If all other factors are held constant,increasing the level of confidence will have what kind of effect on the width of a confidence interval?

Introduction to Statistics

Statistics and the Research Process

Frequency Distributions and Percentiles

Measures of Central Tendency;the Mean, median, and Mode

Measures of Variability: Range, variance, and Standard Deviation

Z-Scores and the Normal Curve

The Correlation Coefficient

Linear Regression

Using Probability to Make Decisions About Data

Introduction to Hypothesis Testing

The Two-Sample T-Test

The One-Way Analysis of Variance

The Two-Way Analysis of Variance

Chi Square and Other Nonparametric Procedures

Filters

Exam 11: Performing the One-Sample T-Test and Testing Correlation Coefficients

A study with 46 participants investigated whether there was a relationship between one's attitude toward giving blood and the number of times one has given blood in a year.The correlation coefficient was r = +0.56.The is _____ and the investigator should _____.

What happens to the t-distribution as the sample size increases?

A two-tailed t-test was conducted for and .Using was compared to .What is the correct 95% confidence interval for ?

Using the data given below,perform a one-tailed t-test with .Use . 74 73 75 70 71 70 72 74 75 74 72 70 71 73

Which of the following is one of the assumptions for hypothesis testing of the Pearson correlation coefficient?

If a sample mean has a value equal to µ,the corresponding value of t will be equal to

When we hear that a recent survey found 36% of adults had used an on-line dating service,the is the

Which kind of estimation is performed when we claim that a population mean is equal to the sample mean?

What is ?

Suppose you correlate reading levels with the ages of 30 elementary school children.You compute and find it to be 0.72,which is a significant correlation coefficient.Which of the following is the most appropriate conclusion?

Which of the following would increase the power of a significance test for correlation?

In a study involving 22 participants,you have found that the Pearson correlation coefficient between the amount of Chemical J2 in the bloodstream and roller coaster enjoyment is 0.53.Use a two-tailed test and to determine if this is a significant correlation coefficient.

How many degrees of freedom do we have in significance testing of r?

What is for a one-tailed test for a negative when 30 participants are tested? Use  = 0.05.

The logic behind computing a confidence interval is to compute the highest and lowest values of a _____ mean that are not significantly different from the _____.

If all other factors are held constant,increasing the level of confidence will have what kind of effect on the width of a confidence interval?

Introduction to Statistics

Statistics and the Research Process

Frequency Distributions and Percentiles

Measures of Central Tendency;the Mean, median, and Mode

Measures of Variability: Range, variance, and Standard Deviation

Z-Scores and the Normal Curve

The Correlation Coefficient

Linear Regression

Using Probability to Make Decisions About Data

Introduction to Hypothesis Testing

The Two-Sample T-Test

The One-Way Analysis of Variance

The Two-Way Analysis of Variance

Chi Square and Other Nonparametric Procedures

Filters

A study with 46 participants investigated whether there was a relationship between one's attitude toward giving blood and the number of times one has given blood in a year.The correlation coefficient was r = +0.56.The is _ and the investigator should _.

The logic behind computing a confidence interval is to compute the highest and lowest values of a _ mean that are not significantly different from the _.