Harlowe purchases a watercolor painting by a prominent local artist and a recumbentsloth brand recliner from a yard sale. she pays cash for both items, and the seller promises to deliver them next week. two days later the seller calls harlowe and says he no longer wants to sell the items and sends harlowe back her money. if harlowe sues, will she be able to get the items she bought?

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