Stats Final

1828 WordsFeb 17, 20148 Pages
* The Final Exam is worth a possible 250 points. * There are 10 essay questions. Question 1 addresses TCO A and is worth 33 points. Questions 2, 3, and 4 address TCO B and are worth 18 points. Questions 5 and 6 address TCO C and are worth 18 points. Questions 7 and 8 address TCO D and are worth 24 points. Question 9 addresses TCO E and is worth 48 points. Question 10 also addresses TCO E and is worth 31 points. * You will have 3 hours and 30 minutes to take the exam. Keep an eye on the remaining time and SAVE your work often, because when the time limit is reached, you will be exited from the exam. * Please also note that during the exam time, the copy/paste and printing functions are disabled. * 1. (TCO A) At an…show more content…
(Points : 18) | 7. (TCO D) An article in a trade journal reports that nationwide 28% of liquor purchases are made by women. If B & B Liquor’s proportion of sales to women is significantly different from the national norm, the owners are considering redesigning B & B’s advertising. A random sample of 100 customers is selected resulting in 24 women and 76 men. Does the sample data provide evidence to conclude that less than 28% of B&B’s customers are women (using  = .01)? Use the hypothesis testing procedure outlined below. a. Formulate the null and alternative hypotheses. b. State the level of significance. c. Find the critical value (or values), and clearly show the rejection and non-rejection regions. d. Compute the test statistic. e. Decide whether you can reject Ho and accept Ha or not. f. Explain and interpret your conclusion in part e. What does this mean? g. Determine the observed p-value for the hypothesis test and interpret this value. What does this mean? h. Does this sample data provide evidence (with = .01), that less than 28% of B & B’s customers are women? (Points : 24) | 8. (TCO D) Carleton Chemical claims that they can produce more than 800 tons of meladone on average per week. A random sample of 36 weeks of production yields the following results. Sample Size = 36
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