Historical data show that customers who download music from a popular Web service spend approximately $24 permonth, with a standard deviation of $4. Assume the spending follows the normal probability distribution. Find the probability that a customer will spend at least $22 per month. How much(or more) do the top 11% of customersspend?

What is the probability that a customer will spend at least $22 permonth?

(Round to four decimal places asneeded.)