Ortega Industries manufactures 15,000 components per year. The manufacturing cost of the components was determined to be as follows: Direct materials $ 150,000 Direct labor 240,000 Variable manufacturing overhead 90,000 Fixed manufacturing overhead 120,000 Total $ 600,000 Assume Ortega Industries could avoid $40,000 of fixed manufacturing overhead if it purchases the component from an outside supplier. An outside supplier has offered to sell the component for $34. If Ortega purchases the component from the supplier instead of manufacturing it, the effect on income would be a:

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