Quiz: Introduction to Hypothesis Testing
Due Dec 8 at 11:59pm
Points 45
Questions 15
Time Limit 60 Minutes
Instructions
The quiz:
Covers the Textbook material from Module 7: Week 7.
Contains 15 multiple-choice and true/false questions.
Is limited to 1 hour.
Allows 1 attempt.
Is worth 45 points.
Submit this assignment by 11:59 p.m. (ET) on Monday of Module 7: Week 7.
Attempt History
Attempt Time Score
LATEST Attempt 1 23 minutes 39 out of 45
Correct answers are hidden.
Score for this quiz: 39 out of 45
Submitted Dec 8 at 6:32pm
This attempt took 23 minutes.
Question 1
pts
A sample of n = 25 individuals is selected from a population with µ
= 80, and a treatment is administered to the sample. Which outcome is expected if the
treatment has no effect?
The sample mean after the treatment should be very different from 80, leading a researcher to reject the null hypothesis.
The sample mean after the treatment should be very different from 80, leading a researcher to fail to reject the null
hypothesis.
, The sample mean after the treatment should be close to 80, leading a researcher to reject the null hypothesis.
The sample mean after the treatment should be close to 80, leading a researcher to fail to reject the null hypothesis.
Question 2
pts
It is possible for a large treatment effect to not be statistically significant.
True
False
Question 3
pts
The critical boundaries for a hypothesis test are z = +1.96 and z
= -1.96. If the z-score for the sample data is z = -1.90, which is the correct statistical decision?
fail to reject H1
fail to reject H0
reject H1
reject H0
Question 4
pts
Consider a researcher who is conducting final clinical trials to validate that a new treatment for
anxiety is effective. This researcher is extremely focused on avoiding mistakes in concluding
that this new treatment is effective when it really is not when conducting their research. What
should this researcher do?
set a low sample mean
set a high sample mean set a
low alpha level
set a high alpha level
Incorrect
Question 5
pts
Which of the following is an accurate definition of a Type I error?
rejecting a false null hypothesis
Due Dec 8 at 11:59pm
Points 45
Questions 15
Time Limit 60 Minutes
Instructions
The quiz:
Covers the Textbook material from Module 7: Week 7.
Contains 15 multiple-choice and true/false questions.
Is limited to 1 hour.
Allows 1 attempt.
Is worth 45 points.
Submit this assignment by 11:59 p.m. (ET) on Monday of Module 7: Week 7.
Attempt History
Attempt Time Score
LATEST Attempt 1 23 minutes 39 out of 45
Correct answers are hidden.
Score for this quiz: 39 out of 45
Submitted Dec 8 at 6:32pm
This attempt took 23 minutes.
Question 1
pts
A sample of n = 25 individuals is selected from a population with µ
= 80, and a treatment is administered to the sample. Which outcome is expected if the
treatment has no effect?
The sample mean after the treatment should be very different from 80, leading a researcher to reject the null hypothesis.
The sample mean after the treatment should be very different from 80, leading a researcher to fail to reject the null
hypothesis.
, The sample mean after the treatment should be close to 80, leading a researcher to reject the null hypothesis.
The sample mean after the treatment should be close to 80, leading a researcher to fail to reject the null hypothesis.
Question 2
pts
It is possible for a large treatment effect to not be statistically significant.
True
False
Question 3
pts
The critical boundaries for a hypothesis test are z = +1.96 and z
= -1.96. If the z-score for the sample data is z = -1.90, which is the correct statistical decision?
fail to reject H1
fail to reject H0
reject H1
reject H0
Question 4
pts
Consider a researcher who is conducting final clinical trials to validate that a new treatment for
anxiety is effective. This researcher is extremely focused on avoiding mistakes in concluding
that this new treatment is effective when it really is not when conducting their research. What
should this researcher do?
set a low sample mean
set a high sample mean set a
low alpha level
set a high alpha level
Incorrect
Question 5
pts
Which of the following is an accurate definition of a Type I error?
rejecting a false null hypothesis
