# Question: Suppose the data shown here are the results of a

Suppose the data shown here are the results of a survey to investigate gasoline prices.Ten service stations were selected randomly in each of two cities and the figures represent the prices of a gallon of unleaded regular gasoline on a given day.

Use the F test to determine whether there is a significant difference in the variances of the prices of unleaded regular gasoline between these two cities. Let α = .01. Assume gasoline prices are normallydistributed.

Use the F test to determine whether there is a significant difference in the variances of the prices of unleaded regular gasoline between these two cities. Let α = .01. Assume gasoline prices are normallydistributed.

## Relevant Questions

How long are resale houses on the market? One survey by the Houston Association of Realtors reported that in Houston, resale houses are on the market an average of 112 days. Of course, the length of time varies by market. ...The following data come from independent samples drawn from normally distributed populations. Use these data to test the following hypotheses. Let the Type I error rate be .05.H0: µ1 - µ2 = 0Ha: µ1 - µ2 > 0Sample 1 ...Suppose a large insurance company wants to estimate the difference between the average amount of term life insurance purchased per family and the average amount of whole life insurance purchased per family. To obtain an ...Is there more variation in the output of one shift in a manufacturing plant than in another shift? In an effort to study this question, plant managers gathered productivity reports from the 8 A.M.to 4 P.M. shift for eight ...For the two large newspapers in your city, you are interested in knowing whether there is a significant difference in the average number of pages in each dedicated solely to advertising. You randomly select 10 editions of ...Post your question