7. The following paired random samples are measurements of the heat-producing capacity (in millions of calories per ton) of coal from two mines: Mine 1: 8,380 Mine 2: 7,660 8,180 7,510 8,500 7,910...

7.

Extracted text: 7. The following paired random samples are measurements of the heat-producing capacity (in millions of calories per ton) of coal from two mines: Mine 1: 8,380 Mine 2: 7,660 8,180 7,510 8,500 7,910 7,840 8,070 7,990 7,790 Use the 0.05 level of significance to test whether the difference between the means of these two samples is significant.