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How many days until thanksgiving

How many days until thanksgiving. 15 16 17 18 19 20. Upcoming in Class. Quiz #6 this Wednesday HW #12 due Sunday Exam #2 next Wednesday Data Project Due by 5pm Thursday December 5 th via email or my department mailbox. Optional Final Exam – Wednesday December 11 th 1-3pm. Chapter 20.

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How many days until thanksgiving

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  1. How many days until thanksgiving • 15 • 16 • 17 • 18 • 19 • 20

  2. Upcoming in Class • Quiz #6 this Wednesday • HW #12 due Sunday • Exam #2 next Wednesday • Data Project Due by 5pm Thursday December 5th via email or my department mailbox. • Optional Final Exam – Wednesday December 11th 1-3pm

  3. Chapter 20 Comparing Means

  4. Drinking Problem • Researchers investigated how the size of a drinking glass affects how much soda people pour. • People were randomly given either a 17oz glass or a 25oz glass, and were invited to pour as much soda as they liked.

  5. Drinking Problem • The summary statistics for the study are: • 17oz glass participants • Mean: 4.89oz • St Dev: 1.75oz • N=24 • 25oz glass participants • Mean: 6.88oz • St Dev: 2.86oz • N=25 • Did the glass size change the selected portion size? • Assume any assumptions and conditions are satisfied. Use a significance level of 0.05.

  6. Let u1 represent the mean for the small glass and u2 represent the mean for the large glass. What is the appropriate hypothesis? • Ho: μ1-μ2=0 Ha: μ1-μ2≠0 • Ho: μ1-μ2=0 Ha: μ1-μ2>0 • Ho: μ1-μ2=0 Ha: μ1-μ2<0

  7. Using the t-statistic, test the hypothesis and state your conclusion. • t=2.951 which is greater than t*. We should reject Ho. The data provide sufficient evidence to conclude the mean for the smaller glass is different than the mean for the larger glass. • t=-2.951 which is greater than t*, in absolute terms. We should reject Ho. The data provide sufficient evidence to conclude the mean for the smaller glass is different than the mean for the larger glass. • t=-2.951 which is less than t*. We should fail to reject Ho. The data do NOT provide sufficient evidence to conclude the mean for the smaller glass is different than the mean for the larger glass.

  8. Upcoming in Class • HW #12 due Sunday • Exam #2 next Wednesday • Data Project Due by 5pm Thursday December 5th via email or my department mailbox. • Optional Final Exam – Wednesday December 11th 1-3pm

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