SCENARIO 12-15
Two new different models of compact SUVs have just arrived at the market.You are interested in comparing the gas mileage performance of both models to see if they are the same.A partial computer output for twelve compact SUVs of model 1 and thirteen of model 2 is given below:
You are told that the gas mileage population distributions for both models are not normally distributed.
-Referring to Scenario 12-15,what is your conclusion on the test using a 5% level of significance?
A)There is not enough evidence of a difference in median gas mileage.
B)There is evidence of a difference in median gas mileage.
C)There is not enough evidence of a difference in mean gas mileage.
D)There is evidence of a difference in mean gas mileage.

Question

SCENARIO 12-15
Two new different models of compact SUVs have just arrived at the market.You are interested in comparing the gas mileage performance of both models to see if they are the same.A partial computer output for twelve compact SUVs of model 1 and thirteen of model 2 is given below:
  You are told that the gas mileage population distributions for both models are not normally distributed.
-Referring to Scenario 12-15,what is your conclusion on the test using a 5% level of significance?
A)There is not enough evidence of a difference in median gas mileage. 
B)There is evidence of a difference in median gas mileage. 
C)There is not enough evidence of a difference in mean gas mileage. 
D)There is evidence of a difference in mean gas mileage.

Quizplus · Accepted Answer

Without the specific details of Scenario 12-15, the correct answer cannot be determined based on the information provided. However, the choice that suggests there is evidence of a difference in median gas mileage (B) is typically selected when a statistical test indicates a significant difference at the 5% level of significance. This implies that the test conducted was likely a non-parametric test focused on medians rather than means, which are used when data does not meet the assumptions required for parametric tests.

SCENARIO 12-15 Two New Different Models of Compact SUVs Have Just Arrived