Four different paints are advertised as having the same drying time. To check the manufacturers’ claims, five samples were tested for each of the paints. The time in minutes until the paint was dry enough for a second coat to be applied was recorded for each sample.

The data obtained follow.

a. Useα .05 to test for any significant differences in mean drying time among the paints.

b. What is your estimate of mean drying time for paint 2? How is it obtained from the computer output?