Question 1

If a binomial distribution has p = .30, then what is the value for q?

Accepted Answer

A) .30 
B) .50 
C) .70 
D) 1.30 
A) .30 
B) .50 
C) .70 
D) 1.30 C

Question 2

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

Accepted Answer

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

Question 3

What is indicated by zero differences in a sign test?

Accepted Answer

A) They provide support for the null hypothesis. 
B) They provided evidence that the null hypothesis should be rejected. 
C) They are not relevant to the null hypothesis and should be discarded. 
D) They indicate that assumptions have been violated and the test should not be done. 
A) They provide support for the null hypothesis. 
B) They provided evidence that the null hypothesis should be rejected. 
C) They are not relevant to the null hypothesis and should be discarded. 
D) They indicate that assumptions have been violated and the test should not be done. A

Question 4

The null hypothesis for a binomial test states that p = 1/5.What is the z-score for X = 29 in a sample of n = 100?

Accepted Answer

A) z = 4/5 
B) z = 9/5 
C) z = 9/4 
D) z = 9/16 
A) z = 4/5 
B) z = 9/5 
C) z = 9/4 
D) z = 9/16

Question 5

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 6

A binomal distribution with p = 1/3 has a standard deviation of 4.What is the sample size?

Accepted Answer

A) n = 16 
B) n = 24 
C) n = 36 
D) n = 72 
A) n = 16 
B) n = 24 
C) n = 36 
D) n = 72

Question 7

A report noted that for the population of 9th graders, one?third of the students are unable to pass a quiz in basic geography.One teacher, having spent a great deal of time on geography instruction, gave the same quiz to a group of n = 72.Only X = 18 students in the group did not pass the test.The teacher would like to know if the number of students in this class who failed the quiz is significantly different from the general population.For this test, what is the z-score corresponding to X = 18?

Accepted Answer

A) z = -0.375 
B) z = -1.00 
C) z = -1.50 
D) z = -2.00 
A) z = -0.375 
B) z = -1.00 
C) z = -1.50 
D) z = -2.00

Question 8

What value(s) are specified by the null hypothesis in a binomial test?

Accepted Answer

A) the value for X 
B) the value for X/n 
C) the value for p 
D) the value for pn 
A) the value for X 
B) the value for X/n 
C) the value for p 
D) the value for pn

Question 9

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

Accepted Answer

A) True 
 B)False

Question 10

A multiple choice exam has 50 questions with 5 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)  $ \mu=10 $ and $ \sigma=\sqrt{8} $ 
B)  $ \mu=25 $ and $ \sigma=\sqrt{8} $ 
C)  $ \mu=10 $ and $ \sigma=16 $ 
D)  $ \mu=25 $ and $ \sigma=8 $ 
A)  $ \mu=10 $ and $ \sigma=\sqrt{8} $ 
B)  $ \mu=25 $ and $ \sigma=\sqrt{8} $ 
C)  $ \mu=10 $ and $ \sigma=16 $ 
D)  $ \mu=25 $ and $ \sigma=8 $

Question 11

A binomial distribution has p = 4/5.How large a sample would be necessary to justify using the normal approximation to the binomial distribution?

Accepted Answer

A) at least 10 
B) at least 13 
C) at least 40 
D) at least 50 
A) at least 10 
B) at least 13 
C) at least 40 
D) at least 50

Question 12

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

Question 13

For a binomial distribution with p = 0.10 and n = 100, what is the range of possible values for X?

Accepted Answer

A) 0 to 1 
B) 0 to 100 
C) 1 to 100 
D) 0.01 to 0.09 
A) 0 to 1 
B) 0 to 100 
C) 1 to 100 
D) 0.01 to 0.09

Question 14

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 15

For a sample of n = 20, which of the following p values satisfies the criterion for using the normal approximation?

Accepted Answer

A) p = 0.70 
B) p = 0.60 
C) p = 0.50 
D) All of the other options satisfy the criterion for the normal approximation. 
A) p = 0.70 
B) p = 0.60 
C) p = 0.50 
D) All of the other options satisfy the criterion for the normal approximation.

Question 16

Which of the following tests is often used for the same kind of research study for which the sign test is appropriate?

Accepted Answer

A) an independent-measures t test 
B) a repeated-measures t test 
C) a Pearson correlation 
D) a chi-square test for goodness of fit 
A) an independent-measures t test 
B) a repeated-measures t test 
C) a Pearson correlation 
D) a chi-square test for goodness of fit

Question 17

The state lottery claims that the probability of winning is p = 1/10 for one of its scratch-off games.If this is true, then what is the probability of getting at least 10 winning tickets in a sample of n = 100?

Accepted Answer

A) p(z > -0.17) 
B) p(z > 0) 
C) p(z > +0.17) 
D) p(z > 0.33) 
A) p(z > -0.17) 
B) p(z > 0) 
C) p(z > +0.17) 
D) p(z > 0.33)

Question 18

For a binomial distribution with p = 0.10 and n = 100, what is the z-score for X = 16?

Accepted Answer

A) 1/3 = 0.33 
B) 2/3 = 0.66 
C) 1.00 
D) 2.00 
A) 1/3 = 0.33 
B) 2/3 = 0.66 
C) 1.00 
D) 2.00

Question 19

If pn = 15 and qn = 45, what is the value for p?

Accepted Answer

A) p = 1/3 
B) p = 0.30 
C) p = 1/4 
D) cannot be determined 
A) p = 1/3 
B) p = 0.30 
C) p = 1/4 
D) cannot be determined

Question 20

On a multiple-choice exam for which each question has four possible answers, the probability of guessing the correct answer is p = 1/4.What is the mean of the binomial distribution for the number of correct guesses for a series of 100 questions?

Accepted Answer

A) 5 
B) 25 
C) $\surd$50 
D) 50 
A) 5 
B) 25 
C) $\surd$50 
D) 50

If a binomial distribution has p = .30, then what is the value for q?

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

What is indicated by zero differences in a sign test?

The null hypothesis for a binomial test states that p = 1/5.What is the z-score for X = 29 in a sample of n = 100?

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

A binomal distribution with p = 1/3 has a standard deviation of 4.What is the sample size?

What value(s) are specified by the null hypothesis in a binomial test?

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

A multiple choice exam has 50 questions with 5 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?

A binomial distribution has p = 4/5.How large a sample would be necessary to justify using the normal approximation to the binomial distribution?

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.

For a binomial distribution with p = 0.10 and n = 100, what is the range of possible values for X?

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

For a sample of n = 20, which of the following p values satisfies the criterion for using the normal approximation?

Which of the following tests is often used for the same kind of research study for which the sign test is appropriate?

The state lottery claims that the probability of winning is p = 1/10 for one of its scratch-off games.If this is true, then what is the probability of getting at least 10 winning tickets in a sample of n = 100?

For a binomial distribution with p = 0.10 and n = 100, what is the z-score for X = 16?

If pn = 15 and qn = 45, what is the value for p?

On a multiple-choice exam for which each question has four possible answers, the probability of guessing the correct answer is p = 1/4.What is the mean of the binomial distribution for the number of correct guesses for a series of 100 questions?

Introduction to Statistics

Frequency Distributions

Central Tendency

Variability

Z-Scores

Probability

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 Anova

Two-Factor Analysis of Variance

Correlation

Introduction to Regression

Chi-Square Tests

Choosing the Right Statistics

Filters

Exam 18: The Binomial Test

If a binomial distribution has p = .30, then what is the value for q?

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

What is indicated by zero differences in a sign test?

The null hypothesis for a binomial test states that p = 1/5.What is the z-score for X = 29 in a sample of n = 100?

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

A binomal distribution with p = 1/3 has a standard deviation of 4.What is the sample size?

What value(s) are specified by the null hypothesis in a binomial test?

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

A multiple choice exam has 50 questions with 5 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?

A binomial distribution has p = 4/5.How large a sample would be necessary to justify using the normal approximation to the binomial distribution?

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.

For a binomial distribution with p = 0.10 and n = 100, what is the range of possible values for X?

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

For a sample of n = 20, which of the following p values satisfies the criterion for using the normal approximation?

Which of the following tests is often used for the same kind of research study for which the sign test is appropriate?

The state lottery claims that the probability of winning is p = 1/10 for one of its scratch-off games.If this is true, then what is the probability of getting at least 10 winning tickets in a sample of n = 100?

For a binomial distribution with p = 0.10 and n = 100, what is the z-score for X = 16?

If pn = 15 and qn = 45, what is the value for p?

On a multiple-choice exam for which each question has four possible answers, the probability of guessing the correct answer is p = 1/4.What is the mean of the binomial distribution for the number of correct guesses for a series of 100 questions?

Introduction to Statistics

Frequency Distributions

Central Tendency

Variability

Z-Scores

Probability

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 Anova

Two-Factor Analysis of Variance

Correlation

Introduction to Regression

Chi-Square Tests

Choosing the Right Statistics

Filters

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