4/28/25, 8:29 AM Midterm 3 Practice Test - Ch #9 - ECN 221 -14214 - 9:00AM: Business Statistics (2025 Spring C), Spring 2025 | WebAssign
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ECN 221 Midterm 3 Practice Test - Ch #9 (Exam) INSTRUCTOR
Kwaku Addae-Ankrah
Arizona State University
Current Score
QUESTION 1 2 3 4 5 6 7 8 9 10 11 12 13
POINTS –/2.22 –/2.22 –/2.22 –/2.22 –/2.22 –/2.22 –/2.22 –/2.22 –/2.22 –/2.22 –/2.22 –/2.22 –/2.22
TOTAL SCORE
–/30.86 0.0%
Due Date
MON, APR 28, 2025
9:00 AM MST
Instructions Assignment Submission & Scoring
Assignment Submission
The practice test covers Chapters 8. The questions are to help you practice
For this assignment, you submit answers by
for the actual test. The actual test may have similar questions but not
question parts. The number of submissions
necessarily the same questions.
remaining for each question part only changes if
you submit or change the answer.
Assignment Scoring
Your last submission is used for your score.
, 4/28/25, 8:29 AM Midterm 3 Practice Test - Ch #9 - ECN 221 -14214 - 9:00AM: Business Statistics (2025 Spring C), Spring 2025 | WebAssign
1. [–/2.22 Points] DETAILS ASWSBE15 9.TB.003.
What type of error occurs if you fail to reject H0 when, in fact, it is not true?
either Type I or Type II, depending on whether the test is one-tailed or two-tailed
Type I
either Type I or Type II, depending on the level of significance
Type II
For a lower tail test, the p-value is the probability of obtaining a value for the test statistic as
small as or smaller than that provided by the sample.
small as or smaller than that provided by the population.
large as or larger than that provided by the population.
large as or larger than that provided by the sample.
The p-value is a probability that measures the support (or lack of support) for
either the null or the alternative hypothesis.
the alternative hypothesis.
neither the null nor the alternative hypothesis.
the null hypothesis.
You may need to use the appropriate appendix table or technology to answer this question.
The calorie content is listed as 241 calories for a prepared meal. Tawnya tests a sample of 30 meals finding a mean of 249.7
calories with a standard deviation of 7.9 calories. Test to determine if the company preparing the meals is packaging meals with a
different calorie content than stated on the label at a 1% (0.01) level of significance using the critical value approach.
The hypotheses are H0: 𝜇 = 241 calories and Ha: 𝜇 ≠ 241 calories. The test statistic is z = 0.76. The critical values are
±2.58. The conclusion is to not reject reject H0. We cannot conclude that the mean calorie content in meals is significantly
different than 241 calories.
The hypotheses are H0: 𝜇 ≤ 241 calories and Ha: 𝜇 > 241 calories. The test statistic is t = 6.032. The critical value is
2.462. The conclusion is to reject H0. We conclude that the mean calorie content in meals is significantly greater than 241
calories.
The hypotheses are H0: 𝜇 = 241 calories and Ha: 𝜇 ≠ 241 calories. The test statistic is t = 6.032. The critical values are
±2.756. The conclusion is to reject H0. We conclude that the mean calorie content in meals is significantly different than
241 calories.
The hypotheses are H0: 𝜇 ≤ 241 calories and Ha: 𝜇 > 241 calories. The test statistic is z = 0.76. The critical value is 2.33.
The conclusion is to not reject H0. We cannot conclude that the mean calorie content in meals is significantly greater than
241 calories.
Assignment Previewer
This is a preview of the questions in your assignment, but it does not reflect all assignment settings. Open the student view to interact with
the actual assignment.
Show answer key SHOW NEW RANDOMIZATION EDIT ASSIGNMENT
ECN 221 Midterm 3 Practice Test - Ch #9 (Exam) INSTRUCTOR
Kwaku Addae-Ankrah
Arizona State University
Current Score
QUESTION 1 2 3 4 5 6 7 8 9 10 11 12 13
POINTS –/2.22 –/2.22 –/2.22 –/2.22 –/2.22 –/2.22 –/2.22 –/2.22 –/2.22 –/2.22 –/2.22 –/2.22 –/2.22
TOTAL SCORE
–/30.86 0.0%
Due Date
MON, APR 28, 2025
9:00 AM MST
Instructions Assignment Submission & Scoring
Assignment Submission
The practice test covers Chapters 8. The questions are to help you practice
For this assignment, you submit answers by
for the actual test. The actual test may have similar questions but not
question parts. The number of submissions
necessarily the same questions.
remaining for each question part only changes if
you submit or change the answer.
Assignment Scoring
Your last submission is used for your score.
, 4/28/25, 8:29 AM Midterm 3 Practice Test - Ch #9 - ECN 221 -14214 - 9:00AM: Business Statistics (2025 Spring C), Spring 2025 | WebAssign
1. [–/2.22 Points] DETAILS ASWSBE15 9.TB.003.
What type of error occurs if you fail to reject H0 when, in fact, it is not true?
either Type I or Type II, depending on whether the test is one-tailed or two-tailed
Type I
either Type I or Type II, depending on the level of significance
Type II
For a lower tail test, the p-value is the probability of obtaining a value for the test statistic as
small as or smaller than that provided by the sample.
small as or smaller than that provided by the population.
large as or larger than that provided by the population.
large as or larger than that provided by the sample.
The p-value is a probability that measures the support (or lack of support) for
either the null or the alternative hypothesis.
the alternative hypothesis.
neither the null nor the alternative hypothesis.
the null hypothesis.
You may need to use the appropriate appendix table or technology to answer this question.
The calorie content is listed as 241 calories for a prepared meal. Tawnya tests a sample of 30 meals finding a mean of 249.7
calories with a standard deviation of 7.9 calories. Test to determine if the company preparing the meals is packaging meals with a
different calorie content than stated on the label at a 1% (0.01) level of significance using the critical value approach.
The hypotheses are H0: 𝜇 = 241 calories and Ha: 𝜇 ≠ 241 calories. The test statistic is z = 0.76. The critical values are
±2.58. The conclusion is to not reject reject H0. We cannot conclude that the mean calorie content in meals is significantly
different than 241 calories.
The hypotheses are H0: 𝜇 ≤ 241 calories and Ha: 𝜇 > 241 calories. The test statistic is t = 6.032. The critical value is
2.462. The conclusion is to reject H0. We conclude that the mean calorie content in meals is significantly greater than 241
calories.
The hypotheses are H0: 𝜇 = 241 calories and Ha: 𝜇 ≠ 241 calories. The test statistic is t = 6.032. The critical values are
±2.756. The conclusion is to reject H0. We conclude that the mean calorie content in meals is significantly different than
241 calories.
The hypotheses are H0: 𝜇 ≤ 241 calories and Ha: 𝜇 > 241 calories. The test statistic is z = 0.76. The critical value is 2.33.
The conclusion is to not reject H0. We cannot conclude that the mean calorie content in meals is significantly greater than
241 calories.
