Applied Statistics in Business and Economics, by Doane and Seward: Chapter 15 – Chapter Exercises 15.18, 15.22, 15.24, and 15.28

Statistics II Homework - No Bibliographies15.18Sixty-four learners in an introductory college stinting science class were asked how many credit they had earned in college, and how authorized they were ab reveal their choice of major. Research incertitude: At ? = .01, is the peak of certainty independent of credits earned? assign bring in Very Uncertain Somewhat reliable Very Certain Row Total0?9 12 8 3 2310?59 8 4 10 2260 or more 1 7 11 19Col Total 21 19 24 64H0: The two factors be independent HA: in that military position is a relationship amongst the two factors. Level of logical implication: = 1% finale Rule: Reject the null guessing if p-value in that kettle of fishfore, thither is adequate evidence to conclude at 5% direct of conditional relation thatthe degree of certainty is dependent on the credits earned. 15.22A student team examined parked cars in four diametric suburban shopping malls. One hundred vehicles were examined in each(prenominal) location. R esearch question: At ? = .05, does vehicle type set forth by mall location? (Data be from a jump out by MBA students Steve Bennett, Alicia Morais, Steve Olson, and Greg Corda.)Vehicle Type Somerset Oakland Great Lakes Jamestown Row TotalCar 44 49 36 64 193Minivan 21 15 18 13 67Full-sized Van 2 3 3 2 10SUV 19 27 26 12 84Truck 14 6 17 9 46Col Total ampere-second blow 100 100 400H0: The two factors are independent HA: There is a relationship between the two factors.

Level of importee: = 5%Decision Rule: Reject the null shot if p-value Therefore, there is sufficient evidence to conclude at 5% level of significance thatthe vehicle type v aries by the location of the mall. 15.24High! levels of cockpit noise in an aircraft can damage the hearing of pilots who are exposed to this hazard for many hours. A Boeing 727 co-pilot collected 61 noise observations using a handheld sound meter. spin level... If you want to get a full essay, order it on our website: BestEssayCheap.com

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