Question 1 10 pts CASE At a local supermarket, the amount spent by a shopper during a single shopping trip follows a normal distribution with a mean of $72 and a standard deviation of $34. Q1. Explain of the variable in this case. Use the statistical expression for the distribution of the variable. [3 points] Q2. What proportion of shoppers spend less than $50 during a shopping trip? Show your work. [3 points] Q3. As the manager of the supermarket, you have decided to award double coupons to your best customers. If you wish to limit double coupons to one-fifth of your customers, what minimum amount must a customer spend during a visit in order to earn double coupons? Show your work. [4 points] Edit View Insert Format Tools Table 12pt v Paragraph R