Question 1

A researcher states a null hypothesis (H0)  that μ = 25. Which of the following is the most likely source of this particular value for?

Accepted Answer

A)   her personal beliefs
B)   her review of the research literature
C)   her own research
D)   her intuitionE) A) and B)
F) A) and C)

Question 2

The term "critical value" is used to define ______.

Accepted Answer

A)   the minimum value of a statistic needed to reject the null hypothesis
B)   the likelihood of rejecting the null hypothesis
C)   the level of significance of a statistic
D)   the probability of a statistic needed to reject the null hypothesisE) A) and B)
F) A) and C)

Question 3

You ______ when the statistic falls in the region of ______ because this means its probability is ______.

Accepted Answer

A)   do not reject the null hypothesis; rejection; 'high'
B)   reject the null hypothesis; non-rejection; 'low'
C)   do not reject the null hypothesis; non-rejection; 'high'
D)   reject the null hypothesis; rejection; 'high'E) B) and D)
F) C) and D)

Question 4

Conceptually, probability is most similar to the concept of ______.

Accepted Answer

A)   certainty
B)   likelihood
C)   division
D)   proofE) B) and D)
F) A) and B)

Question 5

Which of the following beliefs is the BEST example of a null hypothesis (H0) ?

Accepted Answer

A)   "Test prep courses such as Kaplan and the Princeton Review raise students' SAT scores."
B)   "Women are more considerate than men."
C)   "The higher the price of gas, the more people will consider buying a hybrid car."
D)   "All politicians are the same."E) All of the above
F) B) and C)

Question 6

You ______ when the statistic falls in the region of ______ because this means ______.

Accepted Answer

A)   reject the alternative hypothesis; rejection; p 
B)   do not reject the null hypothesis; rejection; p > .01
C)   reject the null hypothesis; non-rejection; p 
D)   do not reject the null hypothesis; non-rejection; p > .05E) None of the above
F) A) and D)

Question 7

Which of the following BEST addresses the addition rule of probability?

Accepted Answer

A)   What are the chances of winning a gold medal in the Olympics?
B)   How likely is it that my Toyota will be in a car accident?
C)   What are the chances of my flight arriving within half an hour of the scheduled time?
D)   What are my chances of having the highest test score in my class?E) A) and B)
F) C) and D)

Question 8

Which of the following BEST addresses the addition rule of probability?

Accepted Answer

A)   What is my chance of winning any type of prize on the state lottery?
B)   Which type of cell phone is most likely to have mechanical problems?
C)   What is the likelihood of a major earthquake hitting the Bay Area today?
D)   Which is more likely to happen to a 30-year old woman: getting married or getting hit by lightning?E) None of the above
F) A) and D)

Question 9

Which of the following BEST addresses the addition rule of probability?

Accepted Answer

A)   What are the chances my checkout line in the grocery store will be the slowest?
B)   Am I more likely to be in an automobile accident or a plane crash?
C)   What is the likelihood of talking a policeman out of giving you a speeding ticket?
D)   What are my chances of my test score being in the top third of the class?E) B) and C)
F) A) and C)

Question 10

Which of the following is the first step in hypothesis testing?

Accepted Answer

A)   make a decision regarding the null hypothesis
B)   calculate the appropriate statistic
C)   relate the result of the analysis to the research hypothesis
D)   state the null and alternative hypothesisE) B) and D)
F) A) and B)

Question 11

A researcher finds that the mean number of arrests for juveniles in his sample is .39 whereas the mean number of arrests in the population is .15 The difference between the two means can be attributed to ______.

Accepted Answer

A)   non-normal error
B)   luck
C)   a lack of planning
D)   sampling errorE) B) and C)
F) A) and C)

Question 12

The ______ hypothesis states that there is no difference or relationship among groups and the ______ hypothesis states that there is a difference or relationship among groups.

Accepted Answer

A)   alternative; null
B)   statistical; null
C)   null; alternative
D)   null; statisticalE) A) and C)
F) B) and C)

Question 13

The concept of ______ refers to differences between statistics calculated from a sample and statistics pertaining to the population from which the sample is drawn.

Accepted Answer

A)   sampling error
B)   probability
C)   random factors
D)   statistical errorE) None of the above
F) B) and C)

Question 14

Which of the following beliefs is the BEST example of a null hypothesis (H0) ?

Accepted Answer

A)   "Republicans are more likely to shoot their hunting partners than are Democrats."
B)   "American Olympic skiers are not better than the rest of the world."
C)   "Hybrid cars get better gas mileage than traditional cars."
D)   "Apple Ipods are easier to use than other companies' MP3 players."E) B) and D)
F) B) and C)

Question 15

Which of the following is an example of a binomial variable?

Accepted Answer

A)   religion (Christian, Buddhist, Catholic, Agnostic) 
B)   race (White, Asian, African American, Hispanic, Native American) 
C)   age (over 65 or under 65) 
D)   highest degree (high school diploma, some college, BA, professional degree) E) A) and C)
F) B) and C)

Question 16

______ hypotheses ______.

Accepted Answer

A)   Research; are stated when you analyze your data
B)   Statistical; are stated using concepts and variables
C)   Research; are stated at the beginning of a research study
D)   Research; are the null and alternative hypothesesE) All of the above
F) None of the above

Exam 6: Probability and Hypothesis Testing

Which of the following beliefs is the BEST example of a null hypothesis (H₀) ?

Correct Answer
verified

The hypothesis states that there is no difference or relationship among groups and the hypothesis states that there is a difference or relationship among groups.

Correct Answer
verified

The concept of ______ refers to differences between statistics calculated from a sample and statistics pertaining to the population from which the sample is drawn.

Correct Answer
verified

Which of the following is an example of a binomial variable?

Correct Answer
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A researcher finds that the mean number of arrests for juveniles in his sample is .39 whereas the mean number of arrests in the population is .15 The difference between the two means can be attributed to ______.

Correct Answer
verified

A researcher states a null hypothesis (H₀) that μ = 25. Which of the following is the most likely source of this particular value for?

Correct Answer
verified

You when the statistic falls in the region of because this means __.

Correct Answer
verified

Which of the following BEST addresses the addition rule of probability?

Correct Answer
verified

You when the statistic falls in the region of because this means its probability is __.

Correct Answer
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Which of the following is the first step in hypothesis testing?

Correct Answer
verified

The term "critical value" is used to define ______.

Correct Answer
verified

Which of the following beliefs is the BEST example of a null hypothesis (H₀) ?

Correct Answer
verified

hypotheses .

Correct Answer
verified

Which of the following BEST addresses the addition rule of probability?

Correct Answer
verified

Conceptually, probability is most similar to the concept of ______.

Correct Answer
verified

Which of the following BEST addresses the addition rule of probability?

Correct Answer
verified

Exam 6: Probability and Hypothesis Testing

Which of the following beliefs is the BEST example of a null hypothesis (H0) ?

Correct AnswerverifiedShow Answer

The ______ hypothesis states that there is no difference or relationship among groups and the ______ hypothesis states that there is a difference or relationship among groups.

Correct AnswerverifiedShow Answer

The concept of ______ refers to differences between statistics calculated from a sample and statistics pertaining to the population from which the sample is drawn.

Correct AnswerverifiedShow Answer

Which of the following is an example of a binomial variable?

Correct AnswerverifiedShow Answer

A researcher finds that the mean number of arrests for juveniles in his sample is .39 whereas the mean number of arrests in the population is .15 The difference between the two means can be attributed to ______.

Correct AnswerverifiedShow Answer

A researcher states a null hypothesis (H0) that μ = 25. Which of the following is the most likely source of this particular value for?

Correct AnswerverifiedShow Answer

You ______ when the statistic falls in the region of ______ because this means ______.

Correct AnswerverifiedShow Answer

Which of the following BEST addresses the addition rule of probability?

Correct AnswerverifiedShow Answer

You ______ when the statistic falls in the region of ______ because this means its probability is ______.

Correct AnswerverifiedShow Answer

Which of the following is the first step in hypothesis testing?

Correct AnswerverifiedShow Answer

The term "critical value" is used to define ______.

Correct AnswerverifiedShow Answer

Which of the following beliefs is the BEST example of a null hypothesis (H0) ?

Correct AnswerverifiedShow Answer

______ hypotheses ______.

Correct AnswerverifiedShow Answer

Which of the following BEST addresses the addition rule of probability?

Correct AnswerverifiedShow Answer

Conceptually, probability is most similar to the concept of ______.

Correct AnswerverifiedShow Answer

Which of the following BEST addresses the addition rule of probability?

Correct AnswerverifiedShow Answer

Which of the following beliefs is the BEST example of a null hypothesis (H₀) ?

Correct Answer
verified

The hypothesis states that there is no difference or relationship among groups and the hypothesis states that there is a difference or relationship among groups.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

A researcher states a null hypothesis (H₀) that μ = 25. Which of the following is the most likely source of this particular value for?

Correct Answer
verified

You when the statistic falls in the region of because this means __.

Correct Answer
verified

Correct Answer
verified

You when the statistic falls in the region of because this means its probability is __.

Correct Answer
verified

Correct Answer
verified

Correct Answer
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Which of the following beliefs is the BEST example of a null hypothesis (H₀) ?

Correct Answer
verified

hypotheses .

Correct Answer
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Correct Answer
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Correct Answer
verified

Correct Answer
verified