Question 1

For a binomial distribution with p = 1/2 and σ = 3,the mean is µ = 18.​

Accepted Answer

A) True 
 B)False

Question 2

For a binomial distribution with p = 1/2 and n = 30,the value of X ranges from 1 to 30.​

Accepted Answer

A) True 
 B)False

Question 3

If a binomial distribution satisfies the criterion for using the normal approximation with p = 0.1,then what can be concluded about the value of n?​

Accepted Answer

A) ​n = 50 
B) ​n  50 
D) ​n > 100 
A) ​n = 50 
B) ​n  50 
D) ​n > 100

Question 4

A multiple choice exam has 50 questions with five choices for each question.If an individual is simply guessing at each answer,what are the values for the mean and the standard deviation of the normal approximation to the binomial distribution for the number of correct answers??

Accepted Answer

A) ?µ = 10 and ? = $\sqrt { 8 }$ 
B) ?µ = 25 and ? = $\sqrt { 8 }$ 
C) ?µ = 10 and ? = 16 
D) ?µ = 25 and ? = 8 
A) ?µ = 10 and ? = $\sqrt { 8 }$ 
B) ?µ = 25 and ? = $\sqrt { 8 }$ 
C) ?µ = 10 and ? = 16 
D) ?µ = 25 and ? = 8

Question 5

For the binomial test,what is the relationship between chi-square and z??

Accepted Answer

A) ??2 = $\sqrt { z }$ 
B) ??2 = z 
C) ?? 2 = z2 
D) ?? 2 = z? 
A) ??2 = $\sqrt { z }$ 
B) ??2 = z 
C) ?? 2 = z2 
D) ?? 2 = z?

Question 6

The null hypothesis specifies a value of p for the population.What is the corresponding statistic for the sample?​

Accepted Answer

A) ​X 
B) ​X/n 
C) ​z 
D) ​pn 
A) ​X 
B) ​X/n 
C) ​z 
D) ​pn

Question 7

For a binomial test,if pn = 12 and qn = 36,then p = 0.25.​

Accepted Answer

A) True 
 B)False

Question 8

If pn = 20 and qn = 60,then what is the value of n?​

Accepted Answer

A) ​100 
B) ​80 
C) ​40 
D) ​20 
A) ​100 
B) ​80 
C) ​40 
D) ​20

Question 9

How are the difference scores coded in a sign test?​

Accepted Answer

A) ​by their ranked size, with increases and decreases ranked separately 
B) ​by their ranked size, independent of sign (increase or decrease) 
C) ​as increases (+) or decreases (−) 
D) ​as probabilities, p and q 
A) ​by their ranked size, with increases and decreases ranked separately 
B) ​by their ranked size, independent of sign (increase or decrease) 
C) ​as increases (+) or decreases (−) 
D) ​as probabilities, p and q

Question 10

Discarding the zero differences for a sign test increase the likelihood of rejecting the null hypothesis.​

Accepted Answer

A) True 
 B)False

Question 11

For binomial data with p = .50 and n = 36,what is the value of s for the normal approximation?​

Accepted Answer

A) ​12 
B) ​9 
C) ​3 
D) ​1 
A) ​12 
B) ​9 
C) ​3 
D) ​1

Question 12

​A binomial distribution has a mean of µ = 40 for a sample of n = 60.What is the value of p?

Accepted Answer

A) 1/3​ 
B) ​2/3 
C) ​1.50 
D) ​0.5 
A) 1/3​ 
B) ​2/3 
C) ​1.50 
D) ​0.5

Question 13

For binomial data,if n = 40 and q = 0.60,then pn = 16.​

Accepted Answer

A) True 
 B)False

Question 14

A researcher is testing a null hypothesis stating that for the general population there is no preference between the two leading brands of cola.In a sample of n = 100 people,35 preferred brand A and 65 preferred brand B.Assuming that the researcher uses a two-tailed test,what is the appropriate statistical decision?​

Accepted Answer

A) ​Reject the null hypothesis with α = .05 but not with α = .01. 
B) ​Reject the null hypothesis with either α = .05 or α = .01. 
C) ​Fail to reject the null hypothesis with either α = .05 or α = .01. 
D) ​No decision is possible without additional information. 
A) ​Reject the null hypothesis with α = .05 but not with α = .01. 
B) ​Reject the null hypothesis with either α = .05 or α = .01. 
C) ​Fail to reject the null hypothesis with either α = .05 or α = .01. 
D) ​No decision is possible without additional information.

Question 15

If p = 1/5,the binomial distribution for samples of n = 100 will have a standard deviation of σ = 4.​

Accepted Answer

A) True 
 B)False

Question 16

For binomial data that satisfy the criterion for using the normal approximation,you can either compute a z-score or a value for chi-square.The relationship between the two statistics is z = χ2.​

Accepted Answer

A) True 
 B)False

Question 17

What is the value of µ for the normal approximation to the binomial distribution with n = 72 and p = 1/3?​

Accepted Answer

A) ​12 
B) ​24 
C) ​36 
D) ​48 
A) ​12 
B) ​24 
C) ​36 
D) ​48

Question 18

For a binomial test with p = 0.20 and n = 100,the z-score for X = 24 is z = 0.25.​

Accepted Answer

A) True 
 B)False

Question 19

For the binomial test,p = q.​

Accepted Answer

A) True 
 B)False

Question 20

The binomial test can be used as an alternative to the chi-square test for goodness of fit provided the observed frequencies fit in exactly two categories.​

Accepted Answer

A) True 
 B)False

For a binomial distribution with p = 1/2 and σ = 3,the mean is µ = 18.

For a binomial distribution with p = 1/2 and n = 30,the value of X ranges from 1 to 30.

If a binomial distribution satisfies the criterion for using the normal approximation with p = 0.1,then what can be concluded about the value of n?

A multiple choice exam has 50 questions with five choices for each question.If an individual is simply guessing at each answer,what are the values for the mean and the standard deviation of the normal approximation to the binomial distribution for the number of correct answers??

For the binomial test,what is the relationship between chi-square and z??

The null hypothesis specifies a value of p for the population.What is the corresponding statistic for the sample?

For a binomial test,if pn = 12 and qn = 36,then p = 0.25.

If pn = 20 and qn = 60,then what is the value of n?

How are the difference scores coded in a sign test?

Discarding the zero differences for a sign test increase the likelihood of rejecting the null hypothesis.

For binomial data with p = .50 and n = 36,what is the value of s for the normal approximation?

A binomial distribution has a mean of µ = 40 for a sample of n = 60.What is the value of p?

For binomial data,if n = 40 and q = 0.60,then pn = 16.

If p = 1/5,the binomial distribution for samples of n = 100 will have a standard deviation of σ = 4.

For binomial data that satisfy the criterion for using the normal approximation,you can either compute a z-score or a value for chi-square.The relationship between the two statistics is z = χ².

What is the value of µ for the normal approximation to the binomial distribution with n = 72 and p = 1/3?

For a binomial test with p = 0.20 and n = 100,the z-score for X = 24 is z = 0.25.

For the binomial test,p = q.

The binomial test can be used as an alternative to the chi-square test for goodness of fit provided the observed frequencies fit in exactly two categories.

Introduction to Statistics

Frequency Distributions

Central Tendency

Variability

Z-Scores: Location of Scores and Standardized Distributions

Probability

Probability and Samples: the Distribution of Sample Means

Introduction to Hypothesis Testing

Introduction to the T Statistic

The T Test for Two Independent Samples

The T Test for Two Related Samples

Introduction to Analysis of Variance

Repeated-Measures Analysis of Variance Anova

Two-Factor Analysis of Variance Independent Measures

Correlation

Introduction to Regression

The Chi-Square Statistic: Tests for Goodness of Fit and Independence

Filters

Exam 18: The Binomial Test

For a binomial distribution with p = 1/2 and σ = 3,the mean is µ = 18.​

For a binomial distribution with p = 1/2 and n = 30,the value of X ranges from 1 to 30.​

If a binomial distribution satisfies the criterion for using the normal approximation with p = 0.1,then what can be concluded about the value of n?​

A multiple choice exam has 50 questions with five choices for each question.If an individual is simply guessing at each answer,what are the values for the mean and the standard deviation of the normal approximation to the binomial distribution for the number of correct answers??

For the binomial test,what is the relationship between chi-square and z??

The null hypothesis specifies a value of p for the population.What is the corresponding statistic for the sample?​

For a binomial test,if pn = 12 and qn = 36,then p = 0.25.​

If pn = 20 and qn = 60,then what is the value of n?​

How are the difference scores coded in a sign test?​

Discarding the zero differences for a sign test increase the likelihood of rejecting the null hypothesis.​

For binomial data with p = .50 and n = 36,what is the value of s for the normal approximation?​

​A binomial distribution has a mean of µ = 40 for a sample of n = 60.What is the value of p?

For binomial data,if n = 40 and q = 0.60,then pn = 16.​

If p = 1/5,the binomial distribution for samples of n = 100 will have a standard deviation of σ = 4.​

For binomial data that satisfy the criterion for using the normal approximation,you can either compute a z-score or a value for chi-square.The relationship between the two statistics is z = χ2.​

What is the value of µ for the normal approximation to the binomial distribution with n = 72 and p = 1/3?​

For a binomial test with p = 0.20 and n = 100,the z-score for X = 24 is z = 0.25.​

For the binomial test,p = q.​

The binomial test can be used as an alternative to the chi-square test for goodness of fit provided the observed frequencies fit in exactly two categories.​

Introduction to Statistics

Frequency Distributions

Central Tendency

Variability

Z-Scores: Location of Scores and Standardized Distributions

Probability

Probability and Samples: the Distribution of Sample Means

Introduction to Hypothesis Testing

Introduction to the T Statistic

The T Test for Two Independent Samples

The T Test for Two Related Samples

Introduction to Analysis of Variance

Repeated-Measures Analysis of Variance Anova

Two-Factor Analysis of Variance Independent Measures

Correlation

Introduction to Regression

The Chi-Square Statistic: Tests for Goodness of Fit and Independence

Filters

For a binomial distribution with p = 1/2 and σ = 3,the mean is µ = 18.

For a binomial distribution with p = 1/2 and n = 30,the value of X ranges from 1 to 30.

If a binomial distribution satisfies the criterion for using the normal approximation with p = 0.1,then what can be concluded about the value of n?

The null hypothesis specifies a value of p for the population.What is the corresponding statistic for the sample?

For a binomial test,if pn = 12 and qn = 36,then p = 0.25.

If pn = 20 and qn = 60,then what is the value of n?

How are the difference scores coded in a sign test?

Discarding the zero differences for a sign test increase the likelihood of rejecting the null hypothesis.

For binomial data with p = .50 and n = 36,what is the value of s for the normal approximation?

A binomial distribution has a mean of µ = 40 for a sample of n = 60.What is the value of p?

For binomial data,if n = 40 and q = 0.60,then pn = 16.

If p = 1/5,the binomial distribution for samples of n = 100 will have a standard deviation of σ = 4.

For binomial data that satisfy the criterion for using the normal approximation,you can either compute a z-score or a value for chi-square.The relationship between the two statistics is z = χ².

What is the value of µ for the normal approximation to the binomial distribution with n = 72 and p = 1/3?

For a binomial test with p = 0.20 and n = 100,the z-score for X = 24 is z = 0.25.

For the binomial test,p = q.

The binomial test can be used as an alternative to the chi-square test for goodness of fit provided the observed frequencies fit in exactly two categories.