Week 4 Statistics Exercise Questions

Sixty-four schoolchilds in an introductory college economics class were asked how much credits they had gain in college, and how certain they were about their quality of major. look for gesture: At ? = .01, is the grad of certainty nonsymbiotic of credits earned? Credits Earned Very unsettled Somewhat Certain Very Certain Row extreme 09 12 8 3 23 1059 8 4 10 22 60 or much 1 7 11 19 gap Total 21 19 24 64 Ho: certainty and credits earned argon independent Ha: certainty and credits earned ar dependent I ran an ANOVA Test using a TI calculator and got the p-value of 0.92 so we fail to reject Ho; the degree of certainty is independent of credits earned. A student group examined parked cars in four different suburban obtain hearts. One hundred vehicles were examined in each military position. explore question: At ? = .05, does vehicle type vary by saunter location? Car 44 49 36 64 193 Minivan 21 15 18 13 67 Full-sized Van 2 3 3 2 10 SUV 19 27 26 12 84 motortruck 14 6 17 9 46 Col Total c 100 100 100 four hundred Ho: vehicle type is independent of mall location Ho; vehicle type is dependent on mall location move ANOVA: p-value of 0.00000121 Reject Ho. postgraduate trains of cockpit perturbation in an aircraft fire damage the hearing of pilots who are opened to this hazard for many hours.

A Boeing 727 co-pilot collected 61 disturbance observations using a handheld sound meter. Noise take aim is defined as Low (under 88 decibels), Medium (88 to 91 decibels), or High (92 decibels or more). There are trine shoot phases (Climb, Cruise, D escent). look question: At ? = .05, is the ! cockpit noise aim independent of escape phase? Ho: noise train independent of passage phase Ha: noise level dependent on flight phase ANOVA p-value = 0.61 pass to reject Ho. Can people really signalise their best-loved brand of cola? Volunteers tasted Coca- dope Classic, Pepsi, Diet Coke, and Diet Pepsi, with the results shown below. Research question: Correct? Regular weed Diet Cola Row...If you want to get a full essay, order it on our website: OrderCustomPaper.com

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