Accurate Tax Returns budgets two direct labor hours for every tax return that it prepares, at a standard cost of $34 an hour. During the most recent year, 540 returns were completed with the labor cost totaling $26,000. The actual labor cost was $48.15 per hour during that period. The actual number of labor hours was 1,000. What is the direct labor cost variance?

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