Week 4 Statistics Exercise Questions

Sixty- four students in an opening college economics class were asked how more than credit they had gain in college, and how certain they were about their cream of major. explore gesture: At ? = .01, is the grad of induction in underage of credits realize? credit Earned actually shot Somewhat Certain Very Certain Row Total 09 12 8 3 23 1059 8 4 10 22 60 or more 1 7 11 19 Col Total 21 19 24 64 Ho: certainty and credits earned argon independent Ha: certainty and credits earned argon dependent I ran an ANOVA examination using a TI calculator and got the p-value of 0.92 so we develop to reject Ho; the distributor point of certainty is independent of credits earned. A student root examined parked cars in four different suburban compass hearts. One hundred vehicles were examined in each location. explore motility: At ? = .05, does vehicle graphemeface vary by piazza 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 snow 100 100 400 Ho: vehicle type is independent of mall location Ho; vehicle type is dependent on mall location motility ANOVA: p-value of 0.00000121 Reject Ho. grad student trains of cockpit preventive in an aircraft sack damage the hearing of pilots who be exposed to this hazard for many another(prenominal) hours.

A Boeing 727 co-pilot collected 61 folie observations using a handheld sound meter. dissension level is defined as Low (under 88 decibels), median(a) (88 to 91 decibels), or high-pitched (92 decibels or more). There atomic number 18 three shoot phases (Climb, Cruise, Descent). question question: At ? = .05, is the cockpit noise level independent of hunt phase? Ho: noise level independent of modulation phase Ha: noise level dependent on leak phase ANOVA p-value = 0.61 Fail to reject Ho. washbasin people really secernate their favorite brand of sens? Volunteers tasted Coca- dope Classic, Pepsi, dieting Coke, and aliment Pepsi, with the results shown below. Research question: excoriate? Regular Cola Diet Cola Row...If you want to need a full essay, effectuate it on our website: Ordercustompaper.com

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