Bob is preparing the sales forecast for his newly launched company over $6$ periods. He has

the following data:

Sales for period $1=$$$100,000$; estimated growth rate per period, uniformly distributed

between $5\%$ and $8\%.$

Cost of sales for period $1=$$$80,000$; estimated growth rate per period, normally

distributed with a mean of $8\%$ and std deviation $3\%.$

Using simulation $(1000$ trials$)$ estimate the average total gross profit after $6$ periods, and its

standard deviation $($Note: total gross profit $=$ total sales $-$ total cost of sales$).$

Please include the excel sheet as well if possible