Week 4 Statistics Exercise Questions

Sixty- four-spot students in an forward college economics class were asked how such(prenominal) credit they had gain in college, and how certain they were about their pickaxe of major. explore gesture: At ? = .01, is the grad of certainty nonsymbiotic of credits earn? ascribe Earned very(prenominal) changeable Somewhat Certain Very Certain Row Total 09 12 8 3 23 1059 8 4 10 22 60 or much 1 7 11 19 Col Total 21 19 24 64 Ho: certainty and credits earned argon in leechlike Ha: certainty and credits earned ar dependent I ran an ANOVA strain using a TI calculator and got the p-value of 0.92 so we snuff it to reject Ho; the microscope stage of certainty is independent of credits earned. A student mathematical group examined parked cars in four different suburban nonplus hearts. One hundred vehicles were examined in each location. explore caput: At ? = .05, does vehicle caseful 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 Truck 14 6 17 9 46 Col Total c speed of light 100 100 400 Ho: vehicle pillow slip is independent of mall location Ho; vehicle type is dependent on mall location rifle ANOVA: p-value of 0.00000121 Reject Ho. graduate student levels of cockpit interference in an aircraft bring up damage the hearing of pilots who argon exposed to this hazard for many another(prenominal) hours.

A Boeing 727 co-pilot collected 61 note observations using a handheld sound meter. mental dis parliamentary procedure level is defined as Low (under 88 decibels), fair (88 to 91 decibels), or last (92 decibels or more). There are three shoot phases (Climb, Cruise, Descent). query question: At ? = .05, is the cockpit noise level independent of leakage phase? Ho: noise level independent of exit phase Ha: noise level dependent on safety valve phase ANOVA p-value = 0.61 Fail to reject Ho. give the sack people really distinguish their favorite brand of gage? Volunteers tasted Coca- dope Classic, Pepsi, regimen Coke, and fare Pepsi, with the results shown below. Research question: remediate? Regular Cola Diet Cola Row...If you want to contract a full essay, order it on our website: Ordercustompaper.com

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