In general, which of the following is true? a. the number of firms in the industry is far more important than the industry's scientific character and extent of technological opportunities.
b. the greater an industry's concentration ratio, the higher are its R&D expenditures in relation to sales.
c. the industry's scientific character and extent of technological opportunities often are more important than the industry's concentration ratio.
d. the higher the industry's interest cost of borrowing funds for R&D, the greater is the industry's progressiveness.

Cooper, cpa, is auditing the financial statements of a small rural municipality. the receivable balances represent residents’ delinquent real estate taxes. internal control at the municipality is weak. to determine the existence of the accounts receivable balances at the balance sheet date, cooper would most likely: cooper, cpa, is auditing the financial statements of a small rural municipality. the receivable balances represent residents’ delinquent real estate taxes. internal control at the municipality is weak. to determine the existence of the accounts receivable balances at the balance sheet date, cooper would most likely:

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

Thomas kratzer is the purchasing manager for the headquarters of a large insurance company chain with a central inventory operation. thomas's fastest-moving inventory item has a demand of 6,000 units per year. the cost of each unit is $100, and the inventory carrying cost is $10 per unit per year. the average ordering cost is $30 per order. it takes about 5 days for an order to arrive, and the demand for 1 week is 120 units. (this is a corporate operation, and the are 250 working days per year.)a) what is the eoq? b) what is the average inventory if the eoq is used? c) what is the optimal number of orders per year? d) what is the optimal number of days in between any two orders? e) what is the annual cost of ordering and holding inventory? f) what is the total annual inventory cost, including cost of the 6,000 units?