Normal Distribution Using 3 larger data set than the one, assume that airline arrival delays are normally distributed with a mean of −5.0 min and a standard deviation of 30.4 min. a. Find the...

Normal Distribution Using 3 larger data set than the one, assume that airline arrival delays are normally distributed with a mean of −5.0 min and a standard deviation of 30.4 min.

a. Find the probability that a randomly selected flight has an arrival delay time of more than 15 min.

b. Find the value of Q3. the arrival delay time that is the third quartile.