2. Safe Spirit sells novelty hats in New York City. The company uses a simple mean to forecast monthly sales. The forecast of sales for month six was $5,000 obtained by averaging past 5 months’ sales. Sales from months one to four were: $6,000, $7,000,

$4,000, and $5,000. However, the sales assistant accidently deleted the sale data for month five in the system. Now, the sales manager wants to determine sales for month five from the remaining data. How would she do that?