Week 4 Statistics Exercise Questions

Sixty-four educatees in an introductory college economics class were asked how more credits they had gain in college, and how certain they were about their option of major. research gesture: At ? = .01, is the grad of certainty nonsymbiotic of credits earned? Credits Earned Very changeful Somewhat Certain Very Certain Row fit 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 atomic number 18 independent Ha: certainty and credits earned argon 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 position. explore question: At ? = .05, does vehicle type vary by midpoint 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 hand truck 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 directs of cockpit disturbance in an aircraft fire damage the hearing of pilots who are undefendable to this hazard for many hours.

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

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