Question 1

Values that describe a sample and a population are

Accepted Answer

A) called,respectively,parameters and statistics. 
B) called,respectively,statistics and parameters. 
C) both called parameters. 
D) both called statistics. 
A) called,respectively,parameters and statistics. 
B) called,respectively,statistics and parameters. 
C) both called parameters. 
D) both called statistics.

Question 2

The percentage of scores between the mean and any particular Z score may be found in a(n)__________.

Accepted Answer

The answer of The percentage of scores between the mean...

Question 3

If a student who wants to study the effect of stress on memory recruits participants by posting a sign-up sheet for anyone willing to participate,the student is conducting

Accepted Answer

A) random selection. 
B) haphazard selection. 
C) specified selection. 
D) quota selection. 
A) random selection. 
B) haphazard selection. 
C) specified selection. 
D) quota selection.

Question 4

If the sophomore class is 50% women,the junior class is 45% women,and the senior class is 55% women,the probability of drawing a woman who is a junior is

Accepted Answer

A) 45% 
B) 50% 
C) 55% 
D) 95% 
A) 45% 
B) 50% 
C) 55% 
D) 95%

Question 5

Using a normal curve table,if a person has a score of 4.78 on a test,which equals a Z score of 1.5,the percentage of cases that lie above this score is

Accepted Answer

A) 43.32% − 50% = -6.68% 
B) 50% − 43.32% = 6.68% 
C) 100% − 43.32% = 56.68% 
D) 50% + 43.32% = 93.32% 
A) 43.32% − 50% = -6.68% 
B) 50% − 43.32% = 6.68% 
C) 100% − 43.32% = 56.68% 
D) 50% + 43.32% = 93.32%

Question 6

On a standard test of optimism,scores of patients diagnosed with a particular disease are normally distributed with a mean of 20 and a standard deviation of 5.
a.Use the normal curve table to determine the score a patient needs to be included among the top 5%,among the top 20%,and among the bottom 10% of optimism scores.
b.Illustrate your answer with a sketch.
c.Explain your answers to a person who is familiar with mean,standard deviation,and Z scores,but not with normal curve percentages.

Accepted Answer

A)Z = 1.64,so X = 28

Question 7

After attending a marital therapy session,a wife's anxiety score is 75,while her husband's is 80.Overall,a wife's average anxiety score after such sessions is 70 (SD = 10),and a husband's average anxiety score after such sessions is 85 (SD = 5).
a.Relative to others of the same gender,who has the lower anxiety score after the session?
b.Explain your answer to someone who has never had a course in statistics.

Accepted Answer

A)Wife's Z = 0.5; Husband's Z

Question 8

In a small private college,80 students play baseball,70 students play football,50 students play basketball,and 550 students do not play any sport.If a student is approached at random,what is the probability that he/she will play baseball or football?

Accepted Answer

A) 150 / 550 = .27 
B) 150 / 750 = .20 
C) 200 / 550 = .36 
D) 550 / 750 = .73 
A) 150 / 550 = .27 
B) 150 / 750 = .20 
C) 200 / 550 = .36 
D) 550 / 750 = .73

Question 9

The interpretation of probability that explains the fact that if a person were to roll a six-sided die an infinite number of times,one would expect to get a one 1/6 of the time,a two 1/6 of the time,and so on is the

Accepted Answer

A) subjective interpretation. 
B) objective interpretation. 
C) long-run relative-frequency interpretation. 
D) Bayesian interpretation. 
A) subjective interpretation. 
B) objective interpretation. 
C) long-run relative-frequency interpretation. 
D) Bayesian interpretation.

Question 10

The normal curve is most likely to be described as

Accepted Answer

A) bimodal and roughly symmetrical. 
B) unimodal,roughly symmetrical,and bell-shaped. 
C) skewed to the right. 
D) a roughly symmetrical U-shape. 
A) bimodal and roughly symmetrical. 
B) unimodal,roughly symmetrical,and bell-shaped. 
C) skewed to the right. 
D) a roughly symmetrical U-shape.

Question 11

Suppose adults in a particular town drive a mean of 65 mph with a standard deviation of 15 mph.Using the normal curve table,
a.What percentage of adults drive below 35 mph?
b.What percentage of adults drive below 68 mph or above 85 mph?
c.What percentage of adults drive between 56 and 80 mph?
d.At what speed does someone need to drive to be included in the top 10%?
e.At what speed does someone need to drive to be included in the bottom 25%?
f.Explain your answers to a person who is familiar with mean,standard deviation,and Z scores,but not with normal curve percentages.

Accepted Answer

A)Z = -2.00,so 2.28% B)Zs = 0.

Question 12

The most accurate statement about research articles in psychology is that

Accepted Answer

A) normal curves and method of selection are occasionally mentioned,and probability is rarely discussed except in terms of statistical significance. 
B) normal curves and probabilities are rarely mentioned,but the method of sampling is almost always described. 
C) normal curves and probabilities are almost always mentioned,but populations and samples are rarely mentioned. 
D) normal curves,probabilities,samples and populations are all almost always described. 
A) normal curves and method of selection are occasionally mentioned,and probability is rarely discussed except in terms of statistical significance. 
B) normal curves and probabilities are rarely mentioned,but the method of sampling is almost always described. 
C) normal curves and probabilities are almost always mentioned,but populations and samples are rarely mentioned. 
D) normal curves,probabilities,samples and populations are all almost always described.

Question 13

The mean,standard deviation,and the variance of a population are called population __________.

Accepted Answer

The answer of The mean,standard deviation,and the variance of a...

Question 14

Following his review of a number of large data sets obtained from measures widely used in psychology research,Micceri concluded that most of the distributions

Accepted Answer

A) closely approximated the normal curve. 
B) were skewed to the left due to pronounced ceiling effects. 
C) were much flatter (kurtotic)than the normal curve. 
D) were not normal. 
A) closely approximated the normal curve. 
B) were skewed to the left due to pronounced ceiling effects. 
C) were much flatter (kurtotic)than the normal curve. 
D) were not normal.

Question 15

If an organizational psychologist conducts extensive interviews with 40 workers at a large factory to examine the morale among workers in general at that factory,the population is

Accepted Answer

A) the 40 workers interviewed. 
B) all the workers in the factory except the 40 interviewed. 
C) all the workers in the factory. 
D) all the workers necessary to create a normal distribution. 
A) the 40 workers interviewed. 
B) all the workers in the factory except the 40 interviewed. 
C) all the workers in the factory. 
D) all the workers necessary to create a normal distribution.

Question 16

In the context of probability,the result of an experiment,or virtually any event (e.g.,a coin coming up heads or that it will rain tomorrow),is a(n)__________.

Accepted Answer

The answer of In the context of probability,the result of...

Question 17

If the probability of something happening is 3 out of 100,this can be written symbolically as __________.

Accepted Answer

The answer of If the probability of something happening is...

Question 18

The variance of a distribution of Z scores is always

Accepted Answer

A) ΣZ / N 
B) (Z)(M + S
D)  
C) 0 
D) 1 
A) ΣZ / N 
B) (Z)(M + S
D)  
C) 0 
D) 1

Question 19

Advanced topic: In a school band,9 kids play string instruments,10 kids play woodwind instruments,7 kids play brass instruments,and 4 kids play percussion instruments.
a.What is the probability that you randomly select a kid who plays a string or percussion instrument?
b.What is the probability that you randomly select a kid who does not play a brass instrument?

Accepted Answer

The answer of Advanced topic: In a school band,9 kids...

Question 20

The probability rule that applies when two mutually exclusive outcomes are possible is the

Accepted Answer

A) addition rule. 
B) subtraction rule. 
C) multiplication rule. 
D) division rule. 
A) addition rule. 
B) subtraction rule. 
C) multiplication rule. 
D) division rule.

Values that describe a sample and a population are

The percentage of scores between the mean and any particular Z score may be found in a(n)__________.

If a student who wants to study the effect of stress on memory recruits participants by posting a sign-up sheet for anyone willing to participate,the student is conducting

If the sophomore class is 50% women,the junior class is 45% women,and the senior class is 55% women,the probability of drawing a woman who is a junior is

Using a normal curve table,if a person has a score of 4.78 on a test,which equals a Z score of 1.5,the percentage of cases that lie above this score is

In a small private college,80 students play baseball,70 students play football,50 students play basketball,and 550 students do not play any sport.If a student is approached at random,what is the probability that he/she will play baseball or football?

The interpretation of probability that explains the fact that if a person were to roll a six-sided die an infinite number of times,one would expect to get a one 1/6 of the time,a two 1/6 of the time,and so on is the

The normal curve is most likely to be described as

The most accurate statement about research articles in psychology is that

The mean,standard deviation,and the variance of a population are called population __________.

Following his review of a number of large data sets obtained from measures widely used in psychology research,Micceri concluded that most of the distributions

If an organizational psychologist conducts extensive interviews with 40 workers at a large factory to examine the morale among workers in general at that factory,the population is

In the context of probability,the result of an experiment,or virtually any event (e.g.,a coin coming up heads or that it will rain tomorrow),is a(n)__________.

If the probability of something happening is 3 out of 100,this can be written symbolically as __________.

The variance of a distribution of Z scores is always

The probability rule that applies when two mutually exclusive outcomes are possible is the

Displaying the Order in a Group of Numbers

Central Tendency and Variability

Introduction to Hypothesis Testing

Hypothesis Tests With Means of Samples

Making Sense of Statistical Significance:decision Errors, Effect Size, and Statistical Power

Introduction to T Tests: Single Sample and Dependent Means

The T Test for Independent Means

Introduction to the Analysis of Variance

Factorial Analysis of Variance

Correlation

Prediction

Chi-Square Tests

Strategies When Population Distributions Are Not Normal: Data Transformations and Rank-Order Tests

The General Linear Model and Making Sense of Advanced Statistical Procedures in Research Articles

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Exam 3: Some Key Ingredients for Inferential Statistics: Z Scores,the Normal Curve, Sample Versus Population, and Probability

Values that describe a sample and a population are

The percentage of scores between the mean and any particular Z score may be found in a(n)__________.

If a student who wants to study the effect of stress on memory recruits participants by posting a sign-up sheet for anyone willing to participate,the student is conducting

If the sophomore class is 50% women,the junior class is 45% women,and the senior class is 55% women,the probability of drawing a woman who is a junior is

Using a normal curve table,if a person has a score of 4.78 on a test,which equals a Z score of 1.5,the percentage of cases that lie above this score is

In a small private college,80 students play baseball,70 students play football,50 students play basketball,and 550 students do not play any sport.If a student is approached at random,what is the probability that he/she will play baseball or football?

The interpretation of probability that explains the fact that if a person were to roll a six-sided die an infinite number of times,one would expect to get a one 1/6 of the time,a two 1/6 of the time,and so on is the

The normal curve is most likely to be described as

The most accurate statement about research articles in psychology is that

The mean,standard deviation,and the variance of a population are called population __________.

Following his review of a number of large data sets obtained from measures widely used in psychology research,Micceri concluded that most of the distributions

If an organizational psychologist conducts extensive interviews with 40 workers at a large factory to examine the morale among workers in general at that factory,the population is

In the context of probability,the result of an experiment,or virtually any event (e.g.,a coin coming up heads or that it will rain tomorrow),is a(n)__________.

If the probability of something happening is 3 out of 100,this can be written symbolically as __________.

The variance of a distribution of Z scores is always

The probability rule that applies when two mutually exclusive outcomes are possible is the

Displaying the Order in a Group of Numbers

Central Tendency and Variability

Introduction to Hypothesis Testing

Hypothesis Tests With Means of Samples

Making Sense of Statistical Significance:decision Errors, Effect Size, and Statistical Power

Introduction to T Tests: Single Sample and Dependent Means

The T Test for Independent Means

Introduction to the Analysis of Variance

Factorial Analysis of Variance

Correlation

Prediction

Chi-Square Tests

Strategies When Population Distributions Are Not Normal: Data Transformations and Rank-Order Tests

The General Linear Model and Making Sense of Advanced Statistical Procedures in Research Articles

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