Stock prices: Following are the closing prices of Microsoft stock for each trading day in May and June 2013.

a. Find the mean and median price in May.
b. Find the mean and median price in June.
c. Does there appear to be a substantial difference in price between May and June? Or are the prices about the same?

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45462 31S 3.67 83.7249350 35 35.02 5427 Mav 33.27 33.49 34.59 34.98 35.00 34.40 34.72 35.00 34.84 35.47 35.67 34.96 34.78 3.99 35.59 33.16 32.72 June 34.90 35.03 34.88 35.02 34.27 34.15 34.6 34.85 35.08 34.87 34.08 33.85 33.53 33.03 32.69 32.66 32.99 33.31 33.75 33.49