I hate these question that involve part A and B part A I get but part B not so sure?
Data was collected outside a popular new restaurant to determine the mean waiting time to be seated at a table. Assume the data was normally distributed with a mean of 45 min and standard deviation of 12 min
determine the probability that a randomly selected person has to wait less than 20 min
So for this questionI would use:
on to part B
determine the probability that a randomly selected person has to wait more than 1 h?
they have to wait more than an hour
so I cant use the normalCDF thing