Please show all work on excel with references thank you. Adams Corporation is planning to buy a machine that will cost $40,000 and depreciate it on a straight-line basis over a 5-year period with no residual value. The tax rate of Adams is 30%, and the proper discount rate is 15%. The earnings before taxes from the machine are uncertain, but their expected value is $15,000 a year, with a standard deviation of $3,000.

1. Find the break-even earnings before tax.
2. Calculate the probability that the machine will be a profitable investment. Adams requires the probability of being profitable to be more than 60% to buy the machine. Based on your calculation, should Adams buy the machine?