One year consumers spent an average of ?$22 on a meal at a resturant. Assume that the amount spent on a resturant meal is normally distributed and that the standard deviation is ?$6 Complete parts? (a) through? (c) below.
a. What is the probability that a randomly selected person spent more than ?$23?
?P(Xgreater than>?$23) =
?(Round to four decimal places as? needed.)
b. What is the probability that a randomly selected person spent between ?$7 and ?$20??
?P($7
?(Round to four decimal places as? needed.)
c. Between what two values will the middle 95?% of the amounts of cash spent? fall?
The middle 95?% of the amounts of cash spent will fall between X =? $__ and X = $__ nothing.
?(Round to the nearest cent as? needed.)