1. Belk Department Store is having a special sale this weekend. Customers
charging purchases of more than $50 to their Belk credit card will be
given a special Belk Lottery card. The customer will scratch off the card,
which will indicate the amount to be taken off the total amount of the
purchase. Listed below are the amount of the prize and the percent of the
time that amount will be deducted from the total amount of the purchase.
i. What is the mean amount deducted from the total purchase
amount?
ii. What is the standard deviation of the amount deducted from the
total purchase?
