An inventory system answers two important questions: when to order and how much to order. which of the following statements correctly explains how a q system (continuous review system) or a p system (periodic review system) answers these questions? a. under a q system, a fixed quantity is ordered every p time period. b. under a q system, an order is placed to replenish the inventory position up to the target level t when the inventory position reaches the reorder point r. c. under a p system, a fixed quantity is ordered when the inventory position reaches the reorder point r d. under a p system, an order is placed to replenish the inventory position up to the target level t every p time periods.

Sales at a fast-food restaurant average $6,000 per day. the restaurant decided to introduce an advertising campaign to increase daily sales. to determine the effectiveness of the advertising campaign, a sample of 49 days of sales were taken. they found that the average daily sales were $6,300 per day. from past history, the restaurant knew that its population standard deviation is about $1,000. if the level of significance is 0.01, have sales increased as a result of the advertising campaign? multiple choicea)fail to reject the null hypothesis.b)reject the null hypothesis and conclude the mean is higher than $6,000 per day.c)reject the null hypothesis and conclude the mean is lower than $6,000 per day.d)reject the null hypothesis and conclude that the mean is equal to $6,000 per day.expert answer