16. Washing Machine Colors A manufacturer of automatic washers provides a particular model in one of three colors—white, black, and stainless steel. Of the first 1000 washers sold, it is noted that 400 were white.

Can you conclude that more than one-third of all customers have a preference for white?

a. Find the p-value for the test.

b. If you plan to conduct your test using a 5.05, what will be your test conclusions?