After a report by newspapers that savings was at an all time low, households begin to save more for retirement. a. Using a correctly labeled loanable funds graph, show and explain how the change in savings will impact real interest rates in the United States in the short-run. b. Assume the nominal interest rate is currently at 8% and there is no expected inflation. If the government announced a 3% expected inflation rate, determine the value of each of the following: i. new nominal interest rate ii. new real interest rate c. Explain how the change in real interest rates identified in part (a) would affect investment spending by businesses.

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