please answer this question

Cars at a paid parking lot remain parked for an average of 4.5 hours and a standard deviation of 1.2 hours. a. What is the probability that a randomly selected car is parked for under 5 hours? b. What is the probability that 7 randomly selected cars are parked for at least 5 hours on average? Mean J = hrs Standard Deviation o = hrs a. For less than 5 hours: X= hrs Z= 2 decimal places P ( x*5) = The probability that parking time is less tha 5 hrs is b. n= He = 2 decimal places ZE = P ( x$5) = P ( x25) = Therefore, the probability that the mean of 7 cars is greater than 5 hours is