Question 1

In an ESP experiment,the participants are required to predict the suit of a card drawn randomly from a complete deck.If a participant correctly identifies the suit for 18 out of 48 trials,is the participant performing significantly better than chance? Test at the .05 level of significance.​

Accepted Answer

The answer of In an ESP experiment,the participants are required...

Question 2

The sign test can be used as an alternative to the independent-measures t test.​

Accepted Answer

A) True 
 B)False

Question 3

For a binomial test with p = 1/2 and n = 36,the z-score for X = 21 is z = +1.00.​

Accepted Answer

A) True 
 B)False

Question 4

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

Accepted Answer

A) ​p = 0.20 
B) ​p = 0.10 
C) ​p = 0.40 
D) ​p = 0.50

Question 5

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) ​p = 4.0

Question 6

For a binomial test,if pn = 10 and qn = 90,then n = 100.​

Accepted Answer

A) True 
 B)False

Question 7

In a binomial hypothesis test,the value for μ must always be a whole number (not a fraction or decimal value).​

Accepted Answer

A) True 
 B)False

Question 8

The probability of correctly predicting the outcome of a coin toss is p = 1/2.What is the standard deviation of the normal approximation to the binomial distribution for the number of correct predictions in a series of 100 tosses?​

Accepted Answer

A) ​50 
B) ​25 
C) ​10 
D) ​5

Question 9

A binomial distribution has p = 1/3 and q = 2/3.How large a sample (n)is necessary to satisfy the criterion for using the normal approximation?​

Accepted Answer

A) ​10 
B) ​15 
C) ​27 
D) ​30

Question 10

What are the mean and standard deviation for the normal approximation to the binomial distribution with n = 100 and p = .20?​

Accepted Answer

A) ​µ = 50 and σ = 5 
B) ​µ = 50 and σ = 4 
C) ​µ = 20 and σ = 16 
D) ​µ = 20 and σ = 4

Question 11

Which test 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

Question 12

For a binomial distribution based on n = 100,the standard deviation would be larger for p = 0.90 than for p = 0.80.​

Accepted Answer

A) True 
 B)False

Question 13

What is indicated by zero differences in a sign test?​

Accepted Answer

A) ​They provide support for the null hypothesis. 
B) ​They provide 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.

Question 14

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

Question 15

A local traffic light is set so that it cycles between 30 seconds of red and 30 seconds of green.What is the probability of randomly hitting a red light more than 25 times in n = 40 trips through the intersection?​

Accepted Answer

The answer of A local traffic light is set so...

Exam 18: The Binomial Test

In an ESP experiment,the participants are required to predict the suit of a card drawn randomly from a complete deck.If a participant correctly identifies the suit for 18 out of 48 trials,is the participant performing significantly better than chance? Test at the .05 level of significance.

The sign test can be used as an alternative to the independent-measures t test.

For a binomial test with p = 1/2 and n = 36,the z-score for X = 21 is z = +1.00.

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

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

For a binomial test,if pn = 10 and qn = 90,then n = 100.

In a binomial hypothesis test,the value for μ must always be a whole number (not a fraction or decimal value).

The probability of correctly predicting the outcome of a coin toss is p = 1/2.What is the standard deviation of the normal approximation to the binomial distribution for the number of correct predictions in a series of 100 tosses?

A binomial distribution has p = 1/3 and q = 2/3.How large a sample (n) is necessary to satisfy the criterion for using the normal approximation?

What are the mean and standard deviation for the normal approximation to the binomial distribution with n = 100 and p = .20?

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

For a binomial distribution based on n = 100,the standard deviation would be larger for p = 0.90 than for p = 0.80.

What is indicated by zero differences in a sign test?

A local traffic light is set so that it cycles between 30 seconds of red and 30 seconds of green.What is the probability of randomly hitting a red light more than 25 times in n = 40 trips through the intersection?

Exam 18: The Binomial Test

In an ESP experiment,the participants are required to predict the suit of a card drawn randomly from a complete deck.If a participant correctly identifies the suit for 18 out of 48 trials,is the participant performing significantly better than chance? Test at the .05 level of significance.​

The sign test can be used as an alternative to the independent-measures t test.​

For a binomial test with p = 1/2 and n = 36,the z-score for X = 21 is z = +1.00.​

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

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

For a binomial test,if pn = 10 and qn = 90,then n = 100.​

In a binomial hypothesis test,the value for μ must always be a whole number (not a fraction or decimal value).​

The probability of correctly predicting the outcome of a coin toss is p = 1/2.What is the standard deviation of the normal approximation to the binomial distribution for the number of correct predictions in a series of 100 tosses?​

A binomial distribution has p = 1/3 and q = 2/3.How large a sample (n) is necessary to satisfy the criterion for using the normal approximation?​

What are the mean and standard deviation for the normal approximation to the binomial distribution with n = 100 and p = .20?​

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

For a binomial distribution based on n = 100,the standard deviation would be larger for p = 0.90 than for p = 0.80.​

What is indicated by zero differences in a sign test?​

A local traffic light is set so that it cycles between 30 seconds of red and 30 seconds of green.What is the probability of randomly hitting a red light more than 25 times in n = 40 trips through the intersection?​

In an ESP experiment,the participants are required to predict the suit of a card drawn randomly from a complete deck.If a participant correctly identifies the suit for 18 out of 48 trials,is the participant performing significantly better than chance? Test at the .05 level of significance.

The sign test can be used as an alternative to the independent-measures t test.

For a binomial test with p = 1/2 and n = 36,the z-score for X = 21 is z = +1.00.

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

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

For a binomial test,if pn = 10 and qn = 90,then n = 100.

In a binomial hypothesis test,the value for μ must always be a whole number (not a fraction or decimal value).

The probability of correctly predicting the outcome of a coin toss is p = 1/2.What is the standard deviation of the normal approximation to the binomial distribution for the number of correct predictions in a series of 100 tosses?

A binomial distribution has p = 1/3 and q = 2/3.How large a sample (n) is necessary to satisfy the criterion for using the normal approximation?

What are the mean and standard deviation for the normal approximation to the binomial distribution with n = 100 and p = .20?

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

For a binomial distribution based on n = 100,the standard deviation would be larger for p = 0.90 than for p = 0.80.

What is indicated by zero differences in a sign test?

A local traffic light is set so that it cycles between 30 seconds of red and 30 seconds of green.What is the probability of randomly hitting a red light more than 25 times in n = 40 trips through the intersection?