week 8 tests.docx - Question 1 of 20 1.0 1.0 Points An...

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Question 1 of 20 1.0/ 1.0 Points An urban economist is curious if the distribution in where Oregon residents live is different today than it was in 1990. She observes that today there are approximately 3,109 thousand residents in NW Oregon, 902 thousand residents in SW Oregon, 244 thousand in Central Oregon, and 102 thousand in Eastern Oregon. She knows that in 1990 the breakdown was as follows: 72.7% NW Oregon, 20.7% SW Oregon, 4.8% Central Oregon, and 2.8% Eastern Oregon. Can she conclude that the distribution in residence is different today at a 0.05 level of significance? A. yes because the p-value = .0009 B. no, because the p-value = .0009 C. yes because the p-value = .0172 D. no because the p-value = .0172 Answer Key:C Feedback: NW Oregon SW Oregon Central Oregon Eastern Oregon Observed Counts 3109 902 244 102 Expected Counts 4357*.727 = 3167.539 4357*.207= 901.899 4357*.048= 209.136 4357*.028= 121.996 Use Excel to find the p-value =CHISQ.TEST(Highlight Observed, Highlight Expected) p-value is < .05, Reject Ho. Yes, this is significant.
Question 2 of 20 1.0/ 1.0 Points
Pamplona, Spain is the home of the festival of San Fermin – The Running of the Bulls. The town is in festival mode for a week and a half every year at the beginning of July. There is a running joke in the city, that Pamplona has a baby boom every April – 9 months after San Fermin. To test this claim, a resident takes a random sample of 300 birthdays from native residents and finds the following observed counts : January 25 February 25 March 27 April 26 May 21 June 26 July 22 August 27 September 21 October 26 November 28 December 26 At the 0.05 level of significance, can it be concluded that births in Pamplona are not equally distributed throughout the 12 months of the year? Hypotheses: H 0 : Births in Pamplona ______ equally distributed throughout the year. H 1 : Births in Pamplona ______ equally distributed throughout the year. Select the best fit choices that fit in the two blank spaces above.
Question 3 of 20
0.0/ 1.0 Points Students at a high school are asked to evaluate their experience in the class at the end of each school year. The courses are evaluated on a 1-4 scale – with 4 being the best experience possible. In the History Department, the courses typically are evaluated at 10% 1’s, 15% 2’s, 34% 3’s, and 41% 4’s. Mr. Goodman sets a goal to outscore these numbers. At the end of the year he takes a random sample of his evaluations and finds 10 1’s, 13 2’s, 48 3’s, and 52 4’s. At the 0.05 level of significance, can Mr. Goodman claim that his evaluations are significantly different than the History Department’s? Use Excel to find the p-value

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