Question 1

Suppose you conduct an experiment and the   is statistically nonsignificant at F1F1F1S1F1F1F100.65.How would you correctly interpret this result?

Accepted Answer

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

Question 2

Which of the following statements does not belong?

Accepted Answer

A) We believe the relationship we found in our experiment represents a real relationship in the population. 
B) The change in the dependent scores was produced by significant sampling error. 
C) We obtained a significant z. 
D) There is a significant effect of the condition. 
A) We believe the relationship we found in our experiment represents a real relationship in the population. 
B) The change in the dependent scores was produced by significant sampling error. 
C) We obtained a significant z. 
D) There is a significant effect of the condition.

Question 3

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

Accepted Answer

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

Question 4

When statisticians report that the results from an experiment are significant,this means the results

Accepted Answer

A) are scientifically important. 
B) are too unlikely to accept as sampling error. 
C) differ from what was predicted by the experimental hypotheses. 
D) do not differ from what was predicted by the null hypothesis. 
A) are scientifically important. 
B) are too unlikely to accept as sampling error. 
C) differ from what was predicted by the experimental hypotheses. 
D) do not differ from what was predicted by the null hypothesis.

Question 5

If a sample mean is different from a particular population µ,we can conclude that the sample mean probably represents some other population or that

Accepted Answer

A) the sample mean does not represent the sample statistic. 
B) an error was made in calculating the sample mean. 
C) an error was made in calculating standard error. 
D) the sample mean occurred as a result of sampling error. 
A) the sample mean does not represent the sample statistic. 
B) an error was made in calculating the sample mean. 
C) an error was made in calculating standard error. 
D) the sample mean occurred as a result of sampling error.

Question 6

Jeri has conducted a study on the average salary of recent graduates in her major at State College.She has randomly selected and surveyed 25 recent graduates from her program.The annual average income of this sample of recent graduates is $34,000.Jeri knows that the population mean income for recent graduates in her area of study is $31,000 with a   If she uses   and a two-tailed test,what is her conclusion?

Accepted Answer

A)    Reject   and accept
  . 
B)    Reject   and accept
  . 
C)    Reject   and accept
  . 
D)    Reject   and accept
  . 
A)    Reject   and accept
  . 
B)    Reject   and accept
  . 
C)    Reject   and accept
  . 
D)    Reject   and accept
  .

Question 7

Which of the following statements is true when   is not rejected?

Accepted Answer

A) The experiment worked. 
B) The data reflect a relationship found in nature. 
C) The data do not provide sufficient evidence of a relationship in nature. 
D) The data prove that the manipulation did not work. 
A) The experiment worked. 
B) The data reflect a relationship found in nature. 
C) The data do not provide sufficient evidence of a relationship in nature. 
D) The data prove that the manipulation did not work.

Question 8

When statisticians report that results are nonsignificant,the results are

Accepted Answer

A) not due to chance. 
B) not important. 
C) likely to reflect chance. 
D) different from what was expected or predicted. 
A) not due to chance. 
B) not important. 
C) likely to reflect chance. 
D) different from what was expected or predicted.

Question 9

For   and   ,what is the appropriate outcome of a z-test?

Accepted Answer

A)    Reject   . 
B)    Reject   . 
C)    Reject   . 
D)    Fail to reject   . 
A)    Reject   . 
B)    Reject   . 
C)    Reject   . 
D)    Fail to reject   .

Question 10

Which of the following is the probability of avoiding 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 11

Suppose you conduct an experiment and your   is statistically significant at +3.45.How would you correctly interpret this result?

Accepted Answer

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

Question 12

Which of the following is correct regarding statistical hypotheses (null hypothesis and alternative hypothesis)?

Accepted Answer

A) They describe the population parameters our sample data represent if the predicted relationship does or does not exist. 
B) They describe the sample data if there is or is not a relationship in the population. 
C) We can prove that a relationship exists in the population by confirming these hypotheses. 
D) They are the hypotheses that we perform on the statistics in our experiment. 
A) They describe the population parameters our sample data represent if the predicted relationship does or does not exist. 
B) They describe the sample data if there is or is not a relationship in the population. 
C) We can prove that a relationship exists in the population by confirming these hypotheses. 
D) They are the hypotheses that we perform on the statistics in our experiment.

Question 13

Which of the following is correct regarding experimental hypotheses?

Accepted Answer

A) We can prove that a predicted relationship exists in a population by confirming an experimental hypothesis. 
B) They describe the population parameters that will be tested by the experiment. 
C) They describe the predicted relationship we may or may not find in an experiment. 
D) We can prove theories about behavior by confirming experimental hypotheses. 
A) We can prove that a predicted relationship exists in a population by confirming an experimental hypothesis. 
B) They describe the population parameters that will be tested by the experiment. 
C) They describe the predicted relationship we may or may not find in an experiment. 
D) We can prove theories about behavior by confirming experimental hypotheses.

Question 14

Which of the following represents a Type I error? We say that something

Accepted Answer

A) works when it really does. 
B) works when it really doesn't. 
C) doesn't work when it really does. 
D) doesn't work when it really doesn't. 
A) works when it really does. 
B) works when it really doesn't. 
C) doesn't work when it really does. 
D) doesn't work when it really doesn't.

Question 15

The power of a statistical test is the probability of

Accepted Answer

A) failing to reject a false   . 
B) failing to reject a true   . 
C) rejecting a false   . 
D) rejecting a true   . 
A) failing to reject a false   . 
B) failing to reject a true   . 
C) rejecting a false   . 
D) rejecting a true   .

Question 16

If you reject the null hypothesis,which of the following may occur?

Accepted Answer

A) A correct decision or a Type I error 
B) A Type I error or a Type II error 
C) A correct decision or a Type II error 
D) A correct decision or a Type I error or a Type II error 
A) A correct decision or a Type I error 
B) A Type I error or a Type II error 
C) A correct decision or a Type II error 
D) A correct decision or a Type I error or a Type II error

Suppose you conduct an experiment and the is statistically nonsignificant at 0.65.How would you correctly interpret this result?

Which of the following statements does not belong?

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

When statisticians report that the results from an experiment are significant,this means the results

If a sample mean is different from a particular population µ,we can conclude that the sample mean probably represents some other population or that

Which of the following statements is true when is not rejected?

When statisticians report that results are nonsignificant,the results are

For and ,what is the appropriate outcome of a z-test?

Which of the following is the probability of avoiding a Type I error?

Suppose you conduct an experiment and your is statistically significant at +3.45.How would you correctly interpret this result?

Which of the following is correct regarding statistical hypotheses (null hypothesis and alternative hypothesis)?

Which of the following is correct regarding experimental hypotheses?

Which of the following represents a Type I error? We say that something

The power of a statistical test is the probability of

If you reject the null hypothesis,which of the following may occur?

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

Suppose you conduct an experiment and the is statistically nonsignificant at 0.65.How would you correctly interpret this result?

Which of the following statements does not belong?

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

When statisticians report that the results from an experiment are significant,this means the results

If a sample mean is different from a particular population µ,we can conclude that the sample mean probably represents some other population or that

Which of the following statements is true when is not rejected?

When statisticians report that results are nonsignificant,the results are

For and ,what is the appropriate outcome of a z-test?

Which of the following is the probability of avoiding a Type I error?

Suppose you conduct an experiment and your is statistically significant at +3.45.How would you correctly interpret this result?

Which of the following is correct regarding statistical hypotheses (null hypothesis and alternative hypothesis)?

Which of the following is correct regarding experimental hypotheses?

Which of the following represents a Type I error? We say that something

The power of a statistical test is the probability of

If you reject the null hypothesis,which of the following may occur?

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