Plz answer both questions Answers:2. Fobt= 10.08, reject H0, do Wilcoxon; Zobt = 1.197, do not reject Ho3. t =0.163, Do not reject Ho; no evidence that the device increases cars' mpg 2.The same experiment was now repeated with a sample of 25 subjects. Again, group 1 did the testwith no time limit and group 2 was timed, yielding the following data:Group 1Group 272848164855876835692817260648855n₁ = 12n₂ = 13X-bar1= 79.5Si= 4.123X-bar₂ = 71.85$2= 13.088Did subjects in group 2 score lower, on average, than subjects in group 1? (a<.01)767983837281808380 3.A new pollution control device for automobiles is claimed not only toreduce carbon monoxide emission but also to increase a car's miles pergallon. To test the latter claim, the mileage per gallon of 10 randomlyselected cars is measured first without and then with the device,yielding the following dataCarL234561789910Miles per gallonWithout Device With Device3221361020142820447201111349489321446Does the device significantly increase cars' mileage per gallon (a<.05)?

As per guidelines, Only one question can be solved when there are multiple questions. So question 2…

2. The same experiment was now repeated with a sample of 25 subjects. Again, group 1 did the test with no time limit and group 2 was timed, yielding the following data: Group 1 Group 2 72 84 81 76 79 83 83 72 81 64 85 80 83 80 58 76 83 56 92 81 72 60 64 88 55 n₁ = 12 n₂ = 13 X-bar1= 79.5 Si= 4.123 X-bar₂ = 71.85 $2= 13.088 Did subjects in group 2 score lower, on average, than subjects in group 1? (a<.01)

2. The same experiment was now repeated with a sample of 25 subjects. Again, group 1 did the test with no time limit and group 2 was timed, yielding the following data: Group 1 Group 2 72 84 81 76 79 83 83 72 81 64 85 80 83 80 58 76 83 56 92 81 72 60 64 88 55 n₁ = 12 n₂ = 13 X-bar1= 79.5 Si= 4.123 X-bar₂ = 71.85 $2= 13.088 Did subjects in group 2 score lower, on average, than subjects in group 1? (a<.01)

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.1: Measures Of Center

Problem 9PPS

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