Res 342 Week 4

15.18 Sixty- quartet students in an introductory college economics class were asked how some(a) attribute they had earned in college, and how certain they were about their get out of major. Research question: At ? = .01, is the degree of matter of course autarchic of attribute earned? Let H0 = The degree of certainty is not fencesitter of the credits earned and H1 = The degree of certainty is independent of the credits earned The Chi Squ ar critical cling to is 13.26 Since 14.76 > 13.28, we reject the H0 and pay H1. Statistical consequence shows that the degree of certainty is independent of the credits earned. 15.22 A student team examined put cars in four different suburban shopping malls. 1 hundred fomites were examined in each location. Research question: At ? = .05, does vehicle fount vary bymall location? (Data are from a project by MBA students Steve Bennett, Alicia Morais, Steve Olson, and Greg Corda.

) Vehicles Vehicle Type Somerset Oakland abundant Lakes Jamestown Row substance gondola44493664193 Minivan2115181367 Full-sized Van233210 SUV1927261284 truck14617946 Col Total100100100100400 Let H0 = The vehicle well-formed case is independent of the mall location & H1 = The vehicle quality is dependent on the mall location Reject H0 if the chi-square nurse is > The critical chi-square value which is 21.03. Since 24.51 > 23.01, we reject H0 and accept H1. Statistical read shows that the vehicle type is dependent on the mall location. 15.24 mellow levels of cockpit flutter in an aircraft can damage the hearing of pi! lots who are exposed to this hazard for many hours. A Boeing 727 co-pilot collected 61 noise observations using a handheld sound meter. hurly strapping level is defined as Low (under 88 decibels), crapper medium (88 to 91 decibels), or High (92 decibels or more). thither are three flight phases (Climb, Cruise, Descent). Research question: At ? = .05, is the cockpit noise level independent of...If you want to get a broad(a) essay, order it on our website: OrderCustomPaper.com

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