Res 342 Week 4

15.18 Sixty- quartet students in an introductory college economics class were asked how most 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 demonstration self-supporting of attribute earned? Let H0 = The degree of certainty is non independent of the credits earned and H1 = The degree of certainty is independent of the credits earned The Chi Squ atomic number 18 critical quantify 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 set cars in four different suburban shopping malls. angiotensin converting enzyme 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 bulky 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 attribute is dependent on the mall location Reject H0 if the chi-square apprise is > The critical chi-square value which is 21.03. Since 24.51 > 23.01, we reject H0 and accept H1. Statistical exhibit shows that the vehicle type is dependent on the mall location. 15.24 soften levels of cockpit flutter in an aircraft can damage the hearing of pilots who are exposed to thi! s hazard for many hours. A Boeing 727 co-pilot collected 61 noise observations using a handheld sound meter. hurly hoarse level is defined as Low (under 88 decibels), down medium (88 to 91 decibels), or High (92 decibels or more). on that point 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: OrderEssay.net

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