question archive Lab 18 Independent Vs

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Lab 18 Independent Vs. Matched Pairs Score: OISZ 0X4 answered Progress saved Done IE] 15‘ 0 Question 1 v < > 8 02'13 pts ‘0 5 Z 3 G) Details Does octane matter? Some people believe that higher octane fuels result in better gas mileage for their cars. To test this claim, a researcher randomly selected 11 individuals (and their cars) to participate in the study. Each individual was given 10 gallons of 87-octane fuel and 10 gallons of 92-octane fuel. The number of miles each driver was able to drive until they ran out of gas with each type of fuel is recorded below. 218 414 447 366 214 353 2- 237 453 456 359 200 384 2 Can the researcher conclude that higher octane fuels result in better gas mileage? Use the o: = 0.05 level. a. State the null and alternative hypotheses. H0: [ii—n [in [Seledananswer I. H1:

Lab 18 Independent Vs. Matched Pairs Score: 0/52 0/4 answered Progress saved Done . . . . Question 1 0/13 pts 95 3 0 Details matter? Some people believe that higher result in better gas mileage for their his claim, a researcher randomly idividuals (and their cars) to participate Each individual was given 10 gallons of l and 10 gallons of 92-octane fuel. The iles each driver was able to drive until of gas with each type of fuel is recorded 2 3 4 5 6 7 8 9 10 11 5 224 218 414 447 366 214 353 267 401 536 5 210 237 453 456 359 200 384 278 409 539 archer conclude that higher octane fuels er gas mileage? Use the a = 0.05 level. le null and alternative hypotheses. Select an answer Select an answer V

b. Find the critical value and sketch the rejection region. Sketch of Rejection Region: -3 -2 -1 0 2 3 Q O 2 Q O -3 -2 0 Q O Critical value(s): (If there are two critical values, list both values separated by a comma) c. Find the test statistic. d. Find the p-value. e. Decide: Select an answer Ho

f. Conclusion: At or = 0.05 significance level, there enough evidence to conclude that higher octane fuels result in better gas mileage.