# MGMT 650 Quiz 7.pdf - Quiz Submissions Quiz 7 Attempt 1...

• Test Prep
• 9
• 96% (92) 88 out of 92 people found this document helpful

This preview shows page 1 - 3 out of 9 pages.

Quiz Submissions - Quiz 7 Attempt 1 Written: Oct 24, 2018 11:39 AM - Oct 24, 2018 12:28 PM Submission View Your quiz has been submitted successfully. 7 / 7 points The report of a sample survey of 1014 adults says, "with 95% confidence, between 9% and 15% of all Americans expect to spend more on gifts this year than last year." What does the phrase "95% confidence" mean? Question options: 95% of all Americans will spend between 9% and 15% more than what they spent last year. 9% to 15% of all Americans will spend 95% of what they spent last year. The method used to get the interval 9% to 15%, when used over and over again, produces intervals w There is a 95% chance that the percent who expect to spend more is between 9% and 15%.
Question 2 What is the critical value of t for a 90% confidence interval with df = 14? (Assume a 2-tailed test) Question options:
1.761310 2.62449 View Feedback 7 / 7 points What is the critical value for a 95% confidence interval based on a sample size of 20? (Population standard deviation is unknown). (Assume a 2-tailed test) Question options:
View Feedback 7 / 7 points A survey of 30 random shoppers found a 95% confidence interval that shoppers will spend between \$24.50 and \$28.30. A second survey surveyed 25 random shoppers.