QNT351 Week5 MyStatsLab
QNT/351 Week 5 My Stats Lab Answers
1. Which hypothesis, the null or the alternative, is the status-quo hypothesis?
Choose the correct answer below
A. null hypothesis
B. alternative hypothesis
2. What is the level of significance of a test of hypothesis?
Choose the correct answer below
A. The level of significance, β, is the probability of committing a Type II error, rejecting the null hypothesis when it is, in fact, true
B. The level of significance, α, is the probability of committing a Type II error, rejecting the null hypothesis when it is, in fact, true
C. The level of significance, α, is the probability of committing a Type I error, rejecting the null hypothesis when it is, in fact, true
D. The level of significance, β, is the probability of committing a Type II error, not rejecting the null hypothesis when it is, in fact, false
E. The level of significance, β, is the probability of committing a Type I error, rejecting the null hypothesis when it is, in fact, true
F. The level of significance, α, is the probability of committing a Type I error, not rejecting the null hypothesis when it is, in fact, false
3. For each of the following rejection regions, sketch the sampling distribution for z and indicate the location of the rejection region, and determine the probability that a Type I error will be made.
a. z < - 1.645 b. z > 2.575 c. z < - 1.28 or z > 1.28 d. z < - 2.33
Which sketch below shows the sampling distribution for the rejection region z < - 1.645?
A. B. C.
Correct Answer = A
What is the probability that a Type I error will be made for z < - 1.645? α=.05 b. Which sketch below shows the sampling distribution for the rejection region z > 2.575?
A. B. C.
Correct Answer = C
What is the probability that a Type I error will be made for z > 2.575? α=.005 c. Which sketch below shows the sampling distribution for the rejection region z < - 1.28 or z > 1.28?
A. B. C.
Correct Answer = B
What is the probability that a Type I error
1. Which hypothesis, the null or the alternative, is the status-quo hypothesis?
Choose the correct answer below
A. null hypothesis
B. alternative hypothesis
2. What is the level of significance of a test of hypothesis?
Choose the correct answer below
A. The level of significance, β, is the probability of committing a Type II error, rejecting the null hypothesis when it is, in fact, true
B. The level of significance, α, is the probability of committing a Type II error, rejecting the null hypothesis when it is, in fact, true
C. The level of significance, α, is the probability of committing a Type I error, rejecting the null hypothesis when it is, in fact, true
D. The level of significance, β, is the probability of committing a Type II error, not rejecting the null hypothesis when it is, in fact, false
E. The level of significance, β, is the probability of committing a Type I error, rejecting the null hypothesis when it is, in fact, true
F. The level of significance, α, is the probability of committing a Type I error, not rejecting the null hypothesis when it is, in fact, false
3. For each of the following rejection regions, sketch the sampling distribution for z and indicate the location of the rejection region, and determine the probability that a Type I error will be made.
a. z < - 1.645 b. z > 2.575 c. z < - 1.28 or z > 1.28 d. z < - 2.33
Which sketch below shows the sampling distribution for the rejection region z < - 1.645?
A. B. C.
Correct Answer = A
What is the probability that a Type I error will be made for z < - 1.645? α=.05 b. Which sketch below shows the sampling distribution for the rejection region z > 2.575?
A. B. C.
Correct Answer = C
What is the probability that a Type I error will be made for z > 2.575? α=.005 c. Which sketch below shows the sampling distribution for the rejection region z < - 1.28 or z > 1.28?
A. B. C.
Correct Answer = B
What is the probability that a Type I error