CoStar Would Like to Test If the Vacancy Rate for "Warehouse

Multiple Choice

CoStar would like to test if the vacancy rate for "warehouse" stores is more than 8%. A random sample of 85 warehouse stores was selected and the number of vacant stores was counted. Assume that the true population proportion of vacant warehouse stores is 0.125. Using α = 0.05, beta equals _______.

A) 0.7188
B) 0.5557
C) 0.3627
D) 0.4091