here are two Chevrolet dealers in Jamestown, New York. The mean monthly sales at Sharkey Chevy and Dave White Chevrolet are about the same. However, Tom Sharkey, the owner of Sharkey Chevy, believes his sales are more consistent. Following are the numbers of new cars sold at Sharkey in the last 7 months and for the last 8 months at Dave White. Do you agree with Mr. Sharkey? Use the 0.01 significance level.

Sharkey98 78 54 57 68 64 70

Dave White75 81 81 30 82 46 58 101

There is more variation of the monthly sales.

• True
• False