# Following are the current prices and last years prices of a gallon of regular gas at a

## Question:

Following are the current prices and last year’s prices of a gallon of regular gas at a sample of 14 gas stations. Can you conclude that the median price is different now from what it was a year ago? Use the α = 0.01 level of significance.

**a.** Compute the value of the test statistic.

**b.** Find the critical value.

**c.** State a conclusion.

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## Step by Step Answer:

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