Question 1

Which is formulated first?

Accepted Answer

A) a theorem 
B) the research hypothesis 
C) the null hypothesis 
D) research postulates 
A) a theorem 
B) the research hypothesis 
C) the null hypothesis 
D) research postulates C

Question 2

Which of the following can be tested directly?

Accepted Answer

A) the null hypothesis 
B) the research hypothesis 
C) both the null and research hypotheses 
D) all hypotheses 
A) the null hypothesis 
B) the research hypothesis 
C) both the null and research hypotheses 
D) all hypotheses B

Question 3

A smaller difference between the sample statistic and the population parameter means that you will have _______ sampling error.

Accepted Answer

A) higher 
B) lower 
C) no 
D) infinite 
A) higher 
B) lower 
C) no 
D) infinite B

Question 4

Unless you have sufficient evidence otherwise, you must assume that ______.

Accepted Answer

A) both the null and alternative hypotheses are true 
B) the alternative hypothesis is true 
C) neither the null nor alternative hypotheses are true 
D) the null hypothesis is true 
A) both the null and alternative hypotheses are true 
B) the alternative hypothesis is true 
C) neither the null nor alternative hypotheses are true 
D) the null hypothesis is true

Question 5

Which of the following types of hypotheses is considered an implied hypothesis?

Accepted Answer

A) the null hypothesis 
B) the alternative hypothesis 
C) the research hypothesis 
D) none of these 
A) the null hypothesis 
B) the alternative hypothesis 
C) the research hypothesis 
D) none of these

Question 6

Which of the following is a directional test?

Accepted Answer

A) a one-tailed test 
B) a two-tailed test 
C) the research hypothesis 
D) the null hypothesis 
A) a one-tailed test 
B) a two-tailed test 
C) the research hypothesis 
D) the null hypothesis

Question 7

Which is formulated second?

Accepted Answer

A) the research hypothesis 
B) research theories 
C) alternative postulates 
D) the null hypothesis 
A) the research hypothesis 
B) research theories 
C) alternative postulates 
D) the null hypothesis

Question 8

Which of the following is an example of a nondirectional hypothesis?

Accepted Answer

A) There is a positive relationship between a high-fat diet and weight gain. 
B) There is a negative relationship between a high-fat diet and weight gain. 
C) There is a relationship between a high-fat diet and weight gain. 
D) There is no relationship between a high-fat diet and weight gain. 
A) There is a positive relationship between a high-fat diet and weight gain. 
B) There is a negative relationship between a high-fat diet and weight gain. 
C) There is a relationship between a high-fat diet and weight gain. 
D) There is no relationship between a high-fat diet and weight gain.

Question 9

A hypothesis is best defined as ______.

Accepted Answer

A) a difficult-to-define question 
B) an educated guess 
C) cause-and-effect analysis 
D) a scientific inquiry 
A) a difficult-to-define question 
B) an educated guess 
C) cause-and-effect analysis 
D) a scientific inquiry

Question 10

Which of the following can only be tested indirectly?

Accepted Answer

A) the null hypothesis 
B) the research hypothesis 
C) the alternative hypothesis 
D) all hypotheses 
A) the null hypothesis 
B) the research hypothesis 
C) the alternative hypothesis 
D) all hypotheses

Question 11

What test would you want to use to test a nondirectional research hypothesis?

Accepted Answer

A) one-tailed test 
B) two-tailed test 
C) nonparametric test 
D) frequency test 
A) one-tailed test 
B) two-tailed test 
C) nonparametric test 
D) frequency test

Question 12

Sampling error relates to how well a population approximates the characteristics of a sample.

Accepted Answer

A) True 
 B)False

Question 13

A statement that postulates a relationship between variables is referred to as a _______.

Accepted Answer

A) research hypothesis 
B) null hypothesis 
C) definitive hypothesis 
D) postulative hypothesis 
A) research hypothesis 
B) null hypothesis 
C) definitive hypothesis 
D) postulative hypothesis

Question 14

Which of the following is an example of a directional hypothesis?

Accepted Answer

A) There is a positive relationship between a high-fat diet and weight gain. 
B) There is a large relationship between a high-fat diet and weight gain. 
C) There is a relationship between a high-fat diet and weight gain. 
D) There is no relationship between a high-fat diet and weight gain. 
A) There is a positive relationship between a high-fat diet and weight gain. 
B) There is a large relationship between a high-fat diet and weight gain. 
C) There is a relationship between a high-fat diet and weight gain. 
D) There is no relationship between a high-fat diet and weight gain.

Question 15

"There is no difference in the weight between rats fed low-fiber diets and rats fed high-fiber diets." This is an example of a(n) _______.

Accepted Answer

A) null hypothesis 
B) alternative hypothesis 
C) directional hypothesis 
D) nondirectional hypothesis 
A) null hypothesis 
B) alternative hypothesis 
C) directional hypothesis 
D) nondirectional hypothesis

Question 16

Which of the following is a nondirectional test?

Accepted Answer

A) a one-tailed test 
B) a two-tailed test 
C) a research hypothesis 
D) all hypotheses 
A) a one-tailed test 
B) a two-tailed test 
C) a research hypothesis 
D) all hypotheses

Question 17

Which of the following is a measure of how well a sample approximates the characteristics of a population?

Accepted Answer

A) sampling accuracy 
B) sampling error 
C) sampling generalizability 
D) sampling consistency 
A) sampling accuracy 
B) sampling error 
C) sampling generalizability 
D) sampling consistency

Question 18

Wolf cubs born in northern woods will grow thicker fur than wolf cubs born in southern woods.This research hypothesis is an example of a _______.

Accepted Answer

A) directional hypothesis 
B) nondirectional hypothesis 
C) null hypothesis 
D) mutual hypothesis 
A) directional hypothesis 
B) nondirectional hypothesis 
C) null hypothesis 
D) mutual hypothesis

Question 19

The null hypothesis refers to the _______, whereas the research hypothesis refers to the _______.

Accepted Answer

A) sample; population 
B) direction; sample 
C) population; direction 
D) population; sample 
A) sample; population 
B) direction; sample 
C) population; direction 
D) population; sample

Question 20

What does a hypothesis help you determine?

Accepted Answer

A) techniques to be used 
B) variability 
C) average score 
D) sampling plan 
A) techniques to be used 
B) variability 
C) average score 
D) sampling plan

Exam 7: Hypotheticals and You: Testing Your Questions

Which is formulated first?

Which of the following can be tested directly?

A smaller difference between the sample statistic and the population parameter means that you will have _______ sampling error.

Unless you have sufficient evidence otherwise, you must assume that ______.

Which of the following types of hypotheses is considered an implied hypothesis?

Which of the following is a directional test?

Which is formulated second?

Which of the following is an example of a nondirectional hypothesis?

A hypothesis is best defined as ______.

Which of the following can only be tested indirectly?

What test would you want to use to test a nondirectional research hypothesis?

Sampling error relates to how well a population approximates the characteristics of a sample.

A statement that postulates a relationship between variables is referred to as a _______.

Which of the following is an example of a directional hypothesis?

"There is no difference in the weight between rats fed low-fiber diets and rats fed high-fiber diets." This is an example of a(n) _______.

Which of the following is a nondirectional test?

Which of the following is a measure of how well a sample approximates the characteristics of a population?

Wolf cubs born in northern woods will grow thicker fur than wolf cubs born in southern woods.This research hypothesis is an example of a _______.

The null hypothesis refers to the _______, whereas the research hypothesis refers to the _______.

What does a hypothesis help you determine?

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