Question
The average gasoline price of one of the major oil companies has been $3.00 per gallon. Because of shortages in production of crude oil, it
The average gasoline price of one of the major oil companies has been $3.00 per gallon. Because of shortages in production of crude oil, it is believed that there has been a significant increase in the average price. In order to test this belief, we randomly selected a sample of 36 of the company's gas stations and determined that the average price for the stations in the sample was $3.06. Assume that the standard deviation of the population () is $0.09. Conduct the following hypothesis test at 5% significance level.
Null Hypothesis: The average gasoline price is at most $3.00. Alternative Hypothesis: The average gasoline price is more than $3.00.
Do not reject the null
Reject the null
None of these
Accept the null
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