Hypothesis testing is a technique that allows you to draw statistically valid conclusions about ________

The amount of time necessary for assembly line workers to complete a product is a normal variable with a mean of 15 minutes and a standard deviation of 2 minutes. The probability is ________ that a product is assembled in between 16 and 21 minutes

Fill in the blank(s) with correct word

Davie Company used estimated direct labor hours of 180,000 and estimated manufacturing

overhead costs of $990,000 in establishing its 2009 predetermined manufacturing overhead rate. Actual results showed: Actual manufacturing overhead $950,000 Allocated manufacturing overhead $962,500 What was the number of direct labor hours worked during 2009? A) 192,000 B) 175,000 C) 186,000 D) 180,000