The business college computing center wants to determine the proportion of business students who have personal computers (PC's) at home. If the proportion differs from 25%, then the lab will modify a proposed enlargement of its facilities. The college sampled 40 business students and found 12 of them had PC's at home. Assume the distribution is approximately normal. Perform a hypothesis test to determine if the proportion differs from 25% Use α = 0.01. Determine the rejection region.