For the following questions circle your answer and show all work when there is w

Question

For the following questions circle your answer and show all work when there is work to be shown. Unless otherwise noted,solutions with out work or reasoning may not receive credit. Special note for hypothesis testing questions: You may use either the p-value method or the rejection region method unless otherwise indicated. Use a significance level of 0.05 if one is not provided. Please show the following for full credit: . o o o o The null and alternative hypotheses The p-value or the rejection region and test statistic The decision (reject or fail to reject HO) The interpretation in terms of the original situation

Explanation / Answer

H0: Mean miles per gallon is same for the three levels of octane

Ha: Mean miles per gallon is different for at least two levels of octane

p-value = 0.158

Decision:

Since the p-value for octance is 0.158, which is not less than 0.05 the null hypothesis is not rejected and it can be concluded that the mean miles per gallon is not different among the three octane levels

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