A Study Was Done Before The Recent Surge In Gasoline Prices To Compare The Cost To Drive 25 Miles For Different Types Of 1 (111.89 KiB) Viewed 374 times
A Study Was Done Before The Recent Surge In Gasoline Prices To Compare The Cost To Drive 25 Miles For Different Types Of 2 (180.87 KiB) Viewed 374 times
A Study Was Done Before The Recent Surge In Gasoline Prices To Compare The Cost To Drive 25 Miles For Different Types Of 3 (150.23 KiB) Viewed 374 times
A study was done before the recent surge in gasoline prices to compare the cost to drive 25 miles for different types of hybrid vehicles. The cost of a gallon of gas at the time of the study was approximately $2.50. Based on the information given below for different models of hybrid cars, trucks, and SUVs, is there sufficient evidence to conclude a difference in the mean cost to drive 25 miles? Use a = 0.01. Hybrid cars 2.1; 2.7 ; 1.67; 1.33 Hybrid SUVs 2.1; 2.42; 2.25 ; 2.10; 2.24 Hybrid trucks 3.62; 3.43; 3.35 a) State the hypotheses and identify the claim with the correct hypothesis. 01. Ho:The means are equal (Not claim) H:At least one of the means is different (claim)
01. Ho:The means are equal (Not claim) H:At least one of the means is different (claim) O2. Ho:The means are equal (claim) H:At least one of the means is different (Not claim) 03. Ho:At least one of the means is different (claim) H:The means are equal (Not claim) b) Find the critical value (s). 01. CV=8.02 2. CV=7.56 3. CV=8.65 11.
c) Compute the test value: O 1. F= 18.91 2. F=16.91 3. F= 17.91 d) Make the decision. o 1. Reject the null hypothesis. 2.Do not reject the null hypothesis. e) Summarize the results. 1. There is enough evidence to support the claim. 2. There is not enough evidence to support the claim.
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