The stem and leaf plot on the monitor asks how many were more than 50 but less than 60. That means we need to see how many have a stem of 5 - since the stems are the tens place and the leaves are the ones place. Any of the other stems - 6, 7, 8, or 9, are not used as they don't fit in the range
There are 3 leaves with a stem of 5, and those are 2, 4, 8. They make the numbers of 52, 54, and 58. All are between 50 and 60.
Thus there are 3 shipments and the third choice from the left is best.
