1. Below are the times (in days) it takes for a sample of 22customers from Jack's computer store to pay their invoices.
19, 15, 43, 39, 35, 31, 27, 22, 18, 14, 42, 38, 34, 30, 26, 21, 37, 37, 37, 33, 33, 29
Draw the frequency polygon for these data using an initial class boundary of 13.5 and a class width of 7. Note that you can add or remove classes from the figure. Label each class with its midpoint.
2. An ordinary (fair) die is a cube with the numbers 1 through 6 on the sides (represented by painted spots). Imagine that such a die is rolled twice in succession and that the face values of the two rolls are added together. This sum is recorded as the outcome of a single trial of a random experiment.
Compute the probability of each of the following events:
Event A: The sum is greater than 9
Event B: The sum is not divisible by 2 and not divisible by 5.