Question 1

What does alpha always represent in statistical hypothesis testing?

Accepted Answer

A) The probability of making a correct decision about   
B) The relative size of the region of rejection 
C) The critical value 
D) 0.05 
A) The probability of making a correct decision about   
B) The relative size of the region of rejection 
C) The critical value 
D) 0.05 B

Question 2

In using a sampling distribution of means for statistical hypothesis testing,the mean of the sampling distribution will always equal

Accepted Answer

A) the µ described by   . 
B) the µ described by   . 
C) the sample mean. 
D) 0.0. 
A) the µ described by   . 
B) the µ described by   . 
C) the sample mean. 
D) 0.0. A

Question 3

In a one-tailed test   is significant only if it lies

Accepted Answer

A) nearer   than
  and has a different sign from
  . 
B) in the tail of the distribution beyond   and has a different sign from
  . 
C) nearer   than
  and has the same sign as
  . 
D) in the tail of the distribution beyond   and has the same sign as
  . 
A) nearer   than
  and has a different sign from
  . 
B) in the tail of the distribution beyond   and has a different sign from
  . 
C) nearer   than
  and has the same sign as
  . 
D) in the tail of the distribution beyond   and has the same sign as
  . D

Question 4

Which of the following assumptions is common to all parametric statistics?

Accepted Answer

A) There are no common assumptions. 
B) The population of dependent scores,regardless of what kind of scores they are,forms a normal distribution. 
C) The dependent scores must be interval or ratio scores,regardless of whether the population of scores forms a normal distribution. 
D) The population of dependent scores,which must be interval or ratio scores,forms a normal distribution. 
A) There are no common assumptions. 
B) The population of dependent scores,regardless of what kind of scores they are,forms a normal distribution. 
C) The dependent scores must be interval or ratio scores,regardless of whether the population of scores forms a normal distribution. 
D) The population of dependent scores,which must be interval or ratio scores,forms a normal distribution.

Question 5

The null hypothesis describes the

Accepted Answer

A) sample statistic and the region of rejection. 
B) sample statistic if a relationship does not exist in the sample. 
C) population parameters represented by the sample data if the predicted relationship exists. 
D) population parameters represented by the sample data if the predicted relationship does not exist. 
A) sample statistic and the region of rejection. 
B) sample statistic if a relationship does not exist in the sample. 
C) population parameters represented by the sample data if the predicted relationship exists. 
D) population parameters represented by the sample data if the predicted relationship does not exist.

Question 6

Which of the following is correct regarding the probability of making a Type I error?

Accepted Answer

A) p = F1F1F1S1F1F1F10 
B) p = (1 F1F1F1S1F1F1F10 F1F1F1S1F1F1F10) 
C) p  F1F1F1S1F1F1F10 
A) p = F1F1F1S1F1F1F10 
B) p = (1 F1F1F1S1F1F1F10 F1F1F1S1F1F1F10) 
C) p  F1F1F1S1F1F1F10

Question 7

For a two-tailed test where F1F1F1S1F1F1F10 = 0.05,   is always equal to

Accepted Answer

A) F1F1F1S1F1F1F101.96. 
B) +1.96. 
C) ±1.96. 
D) ±1.645. 
A) F1F1F1S1F1F1F101.96. 
B) +1.96. 
C) ±1.96. 
D) ±1.645.

Question 8

When is a two-tailed test used?

Accepted Answer

A) When no relationship is predicted 
B) When a relationship is predicted and the direction in which the scores will change is predicted 
C) When the demonstrated relationship is predicted 
D) When a relationship is predicted without stating the direction in which the scores will change 
A) When no relationship is predicted 
B) When a relationship is predicted and the direction in which the scores will change is predicted 
C) When the demonstrated relationship is predicted 
D) When a relationship is predicted without stating the direction in which the scores will change

Question 9

Which of the following alternative hypotheses would require using a two-tailed test?

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 10

What happens to the probability of committing a Type I error if the level of significance is changed from F1F1F1S1F1F1F10 = 0.01 to F1F1F1S1F1F1F10 = 0.05?

Accepted Answer

A) The probability of committing a Type I error will decrease. 
B) The probability of committing a Type I error will increase. 
C) The probability of committing a Type I error will remain the same. 
D) The change in probability will depend on your sample size. 
A) The probability of committing a Type I error will decrease. 
B) The probability of committing a Type I error will increase. 
C) The probability of committing a Type I error will remain the same. 
D) The change in probability will depend on your sample size.

Question 11

What does the sampling distribution describe?

Accepted Answer

A) The sample distribution when the null hypothesis is true. 
B) The sampling distribution when the null hypothesis is true. 
C) The population distribution when the null hypothesis is false. 
D) The alternative distribution when the null hypothesis is false. 
A) The sample distribution when the null hypothesis is true. 
B) The sampling distribution when the null hypothesis is true. 
C) The population distribution when the null hypothesis is false. 
D) The alternative distribution when the null hypothesis is false.

Question 12

Which of the following is called the hypothesis of "no difference"?

Accepted Answer

A) The null hypothesis 
B) The experimental hypothesis 
C) The alternative hypothesis 
D) The statistical hypothesis 
A) The null hypothesis 
B) The experimental hypothesis 
C) The alternative hypothesis 
D) The statistical hypothesis

Question 13

When is a one-tailed test used?

Accepted Answer

A) When no relationship is predicted 
B) When a relationship is predicted and the direction in which the scores will change is predicted 
C) When the demonstrated relationship is predicted 
D) When a relationship is predicted without stating the direction in which the scores will change 
A) When no relationship is predicted 
B) When a relationship is predicted and the direction in which the scores will change is predicted 
C) When the demonstrated relationship is predicted 
D) When a relationship is predicted without stating the direction in which the scores will change

Question 14

For a one-tailed test where the predicted value of the sample mean is larger than the population mean and F1F1F1S1F1F1F10 = 0.05,   is always equal to

Accepted Answer

A) ±1.645. 
B) +1.645. 
C) F1F1F1S1F1F1F101.645. 
D) ±1.96. 
A) ±1.645. 
B) +1.645. 
C) F1F1F1S1F1F1F101.645. 
D) ±1.96.

Question 15

Which of the following tests is considered to be more powerful?

Accepted Answer

A) A one-tailed test 
B) A two-tailed test 
C) Neither;they are both equally statistically powerful 
D) Which is more powerful depends on the sample size 
A) A one-tailed test 
B) A two-tailed test 
C) Neither;they are both equally statistically powerful 
D) Which is more powerful depends on the sample size

Question 16

What does it mean when a computer printout reads "p = 0.03"?

Accepted Answer

A) The   falls in the extreme 3% of the sampling distribution and the probability of a Type I error is 0.03. 
B) The   falls in the extreme 3% of the sampling distribution and the probability of a Type II error is 0.03. 
C) The probability of a Type I error (0.03)is smaller than F1F1F1S1F1F1F10 (0.05),and,therefore,the results are nonsignificant. 
D) The probability of an error should be reported as p F1F1F1S1F1F1F10 0.01. 
A) The   falls in the extreme 3% of the sampling distribution and the probability of a Type I error is 0.03. 
B) The   falls in the extreme 3% of the sampling distribution and the probability of a Type II error is 0.03. 
C) The probability of a Type I error (0.03)is smaller than F1F1F1S1F1F1F10 (0.05),and,therefore,the results are nonsignificant. 
D) The probability of an error should be reported as p F1F1F1S1F1F1F10 0.01.

Question 17

Which of the following accurately defines a Type I error?

Accepted Answer

A) Rejecting   when
  is true 
B) Rejecting   when
  is false 
C) Retaining   when
  is true 
D) Retaining   when
  is false 
A) Rejecting   when
  is true 
B) Rejecting   when
  is false 
C) Retaining   when
  is true 
D) Retaining   when
  is false

Question 18

When can the z-test be used in statistical hypothesis testing?

Accepted Answer

A) When the measure of central tendency used for the raw scores is the median 
B) When the raw scores are transformed from a nominal scale to a ratio scale 
C) When the raw score population's standard deviation is known 
D) When the z-test standard deviation is known 
A) When the measure of central tendency used for the raw scores is the median 
B) When the raw scores are transformed from a nominal scale to a ratio scale 
C) When the raw score population's standard deviation is known 
D) When the z-test standard deviation is known

Question 19

According to the null hypothesis,if our   appears to represent the predicted relationship,it is because

Accepted Answer

A) the relationship actually exists. 
B) our sample is invalid. 
C) something has gone terribly wrong. 
D) of sampling error. 
A) the relationship actually exists. 
B) our sample is invalid. 
C) something has gone terribly wrong. 
D) of sampling error.

Question 20

What happens when the experimental results are nonsignificant?

Accepted Answer

A) The alternative hypothesis has been accepted. 
B) The alternative hypothesis has been rejected. 
C) The null hypothesis has been rejected. 
D) The null hypothesis has not been rejected. 
A) The alternative hypothesis has been accepted. 
B) The alternative hypothesis has been rejected. 
C) The null hypothesis has been rejected. 
D) The null hypothesis has not been rejected.

What does alpha always represent in statistical hypothesis testing?

In using a sampling distribution of means for statistical hypothesis testing,the mean of the sampling distribution will always equal

In a one-tailed test is significant only if it lies

Which of the following assumptions is common to all parametric statistics?

The null hypothesis describes the

Which of the following is correct regarding the probability of making a Type I error?

For a two-tailed test where  = 0.05, is always equal to

When is a two-tailed test used?

Which of the following alternative hypotheses would require using a two-tailed test?

What happens to the probability of committing a Type I error if the level of significance is changed from  = 0.01 to  = 0.05?

What does the sampling distribution describe?

Which of the following is called the hypothesis of "no difference"?

When is a one-tailed test used?

For a one-tailed test where the predicted value of the sample mean is larger than the population mean and  = 0.05, is always equal to

Which of the following tests is considered to be more powerful?

What does it mean when a computer printout reads "p = 0.03"?

Which of the following accurately defines a Type I error?

When can the z-test be used in statistical hypothesis testing?

According to the null hypothesis,if our appears to represent the predicted relationship,it is because

What happens when the experimental results are nonsignificant?

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

Performing the One-Sample T-Test and Testing Correlation Coefficients

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 10: Introduction to Hypothesis Testing

What does alpha always represent in statistical hypothesis testing?

In using a sampling distribution of means for statistical hypothesis testing,the mean of the sampling distribution will always equal

In a one-tailed test is significant only if it lies

Which of the following assumptions is common to all parametric statistics?

The null hypothesis describes the

Which of the following is correct regarding the probability of making a Type I error?

For a two-tailed test where  = 0.05, is always equal to

When is a two-tailed test used?

Which of the following alternative hypotheses would require using a two-tailed test?

What happens to the probability of committing a Type I error if the level of significance is changed from  = 0.01 to  = 0.05?

What does the sampling distribution describe?

Which of the following is called the hypothesis of "no difference"?

When is a one-tailed test used?

For a one-tailed test where the predicted value of the sample mean is larger than the population mean and  = 0.05, is always equal to

Which of the following tests is considered to be more powerful?

What does it mean when a computer printout reads "p = 0.03"?

Which of the following accurately defines a Type I error?

When can the z-test be used in statistical hypothesis testing?

According to the null hypothesis,if our appears to represent the predicted relationship,it is because

What happens when the experimental results are nonsignificant?

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

Performing the One-Sample T-Test and Testing Correlation Coefficients

The Two-Sample T-Test

The One-Way Analysis of Variance

The Two-Way Analysis of Variance

Chi Square and Other Nonparametric Procedures

Filters