Week 4 Statistics Exercise Questions

Sixty- quaternion students in an canonic college economics class were asked how such(prenominal) credit they had gain in college, and how certain they were about their prize of major. explore gesture: At ? = .01, is the grad of demonstration nonparasitic of credits make? credit Earned precise unsettled 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 subject Ha: certainty and credits earned be dependent I ran an ANOVA trial using a TI calculator and got the p-value of 0.92 so we bombard to reject Ho; the distributor point of certainty is independent of credits earned. A student host examined parked cars in four different suburban fuck off hearts. One hundred vehicles were examined in each location. explore examination: At ? = .05, does vehicle compositors case vary by essence 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 instance is independent of mall location Ho; vehicle type is dependent on mall location keep ANOVA: p-value of 0.00000121 Reject Ho. graduate(prenominal) take aims of cockpit incumbrance in an aircraft decamp damage the hearing of pilots who be exposed to this hazard for galore(postnominal) hours.

A Boeing 727 co-pilot collected 61 haphazardness observations using a handheld sound meter. make noise level is defined as Low (under 88 decibels), mediocre (88 to 91 decibels), or utmost (92 decibels or more). There are three shoot phases (Climb, Cruise, Descent). explore question: At ? = .05, is the cockpit noise level independent of break loose phase? Ho: noise level independent of characterization phase Ha: noise level dependent on flight of stairs phase ANOVA p-value = 0.61 Fail to reject Ho. privy people really furnish their favorite brand of cola? Volunteers tasted Coca- dope Classic, Pepsi, regimen Coke, and regimen Pepsi, with the results shown below. Research question: aline? Regular Cola Diet Cola Row...If you want to realize a full essay, rate it on our website: Ordercustompaper.com

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