Marc and michelle are married and earned salaries this year of $69,200 and $13,950, respectively. in addition to their salaries, they received interest of $350 from municipal bonds and $1,150 from corporate bonds. marc and michelle also paid $3,150 of qualifying moving expenses, and marc paid alimony to a prior spouse in the amount of $2,150. marc and michelle have a 10-year-old son, matthew, who lived with them throughout the entire year. thus, marc and michelle are allowed to claim a $1,000 child tax credit for matthew. marc and michelle paid $7,300 of expenditures that qualify as itemized deductions and they had a total of $6,330 in federal income taxes withheld from their paychecks during the course of the year. (use the tax rate schedules. )

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