Robert and Zach live in the same apartment building and work in the same office complex. Consequently, they drive exactly the same route to work every day. However, even though the traffic patterns are basically the same during their respective commutes, Robert gets noticeably better gas mileage than Zach. In exploring why this is so, they note that Robert's car is Brand X and Model A. Robert also takes the car in for regular tune-ups, keeps the tires properly inflated, and always obeys the speed limit. Zach's car is also Brand X, but it is Model B rather than Model A. Like Robert, Zach takes the car in for regular tune-ups, keeps the tires properly inflated, and always obeys the speed limit. What is the most likely cause for Robert's better gas mileage

Emily spent her summer vacation in buenos aires, argentina, where she got plastic surgery for a fraction of what it would cost in the united states. this is an example of:

Connors academy reported inventory in the 2017 year-end balance sheet, using the fifo method, as $154,000. in 2018, the company decided to change its inventory method to lifo. if the company had used the lifo method in 2017, the company estimates that ending inventory would have been in the range $130,000-$135,000. what adjustment would connors make for this change in inventory method?

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