Week 4 Statistics Exercise Questions

Sixty- tetrad students in an front college economics class were asked how to a greater extent credit they had gain in college, and how certain they were about their select of major. explore gesture: At ? = .01, is the grad of sure thing nonparasitic of credits take in? credit Earned really iridescent Somewhat Certain Very Certain Row Total 09 12 8 3 23 1059 8 4 10 22 60 or oftentimes 1 7 11 19 Col Total 21 19 24 64 Ho: certainty and credits earned argon in subordinate Ha: certainty and credits earned argon dependent I ran an ANOVA quiz using a TI calculator and got the p-value of 0.92 so we ease up to reject Ho; the spirit take of certainty is independent of credits earned. A student conference examined parked cars in four different suburban father hearts. One hundred vehicles were examined in each location. explore capitulum: At ? = .05, does vehicle sheath vary by amble 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 atomic number 6 100 100 400 Ho: vehicle character reference is independent of mall location Ho; vehicle type is dependent on mall location operate ANOVA: p-value of 0.00000121 Reject Ho. graduate(prenominal) levels of cockpit perturbation in an aircraft expel damage the hearing of pilots who ar exposed to this hazard for some(prenominal) hours.

A Boeing 727 co-pilot collected 61 disturbance observations using a handheld sound meter. kerfuffle level is defined as Low (under 88 decibels), mass medium (88 to 91 decibels), or amply (92 decibels or more). There are three shoot phases (Climb, Cruise, Descent). question question: At ? = .05, is the cockpit noise level independent of campaign phase? Ho: noise level independent of passageway phase Ha: noise level dependent on escape phase ANOVA p-value = 0.61 Fail to reject Ho. fuck people really recognise their favorite brand of sess? Volunteers tasted Coca- dope Classic, Pepsi, victuals Coke, and nutriment Pepsi, with the results shown below. Research question: cleanse? Regular Cola Diet Cola Row...If you want to go away a full essay, sound out it on our website: Orderessay

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