Ighsmith rental company purchased an apartment building early in 2018. there are 20 apartments in the building and each is furnished with major kitchen appliances. the company has decided to use the group depreciation method for the appliances. the following data are available: appliance cost residual value service life (in years) stoves $ 37,000 $ 4,000 6 refrigerators 32,000 3,000 5 dishwashers 30,000 2,000 4 in 2021, three new refrigerators costing $3,800 were purchased for cash. the old refrigerators, which originally cost $3,700, were sold for $1,300. required: 1. calculate the group depreciation rate, group life, and depreciation for 2018. 2. prepare the journal entries to record the purchase of the new refrigerators and the sale of the old refrigerators.

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