Please answer only b part (i and ii). Also show work as well (steps, process). Thanks in advance!

7. (35 points) Harry Company has signed a contract that requires them to produce and sell 60,000 units for $5 per unit. A regression model was run using 24 observations to measure total costs as a function of units. It is as follows: Total costs = $100,000 + $3 per unit The standard error of the estimate is $7,500. Required: Calculate the following assuming certainty: i. Breakeven in units and dollars ii. Sales quantity needed to obtain an after-tax profit of $36,000. Assume that a 40 percent tax rate is used for only part ii. iii. Sales in dollars needed to obtain a pretax profit equal to 20 percent of sales. b. Calculate the following assuming uncertainty: i. What is the range of incomes that would be expected with 95 percent confidence? ii. What is the probability that the firm will lose money next year