Answer:
e. A skewed left distribution would be the most desirable because this would mean there are a lot of short waiting times and only a few long waiting times.
Step-by-step explanation:
The most desirable function for waiting times would be a skewed right distribution because this will indicate that there are lot of short waiting time because there would be few values only that would fall at the early part of the curve and also the tail will tend to decay as we move further.
Hence this indicates that there would be few waiting times and lots of short waiting time as we move further with the tail of this distribution.