Consider Example 8.8 Suppose 18 specimens were used for each type of paint in an experiment and x_A — x_B, the actual difference in mean drying time turned out to be 1.0. 

(a) Does this seem to be a reasonable result if the two population mean drying times truly are equal? Make use of the result in the solution to Example 8.8.

(b) If someone did the experiment 10,000 times under the condition that μ_A = μ_B, in how many of those 10,000 experiments would there be a difference x_A – x_B that is as large (or larger) as 1.0?

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