Chapter 1.4, Problem 25E

The report referenced in the previous exercise also gave wet weather grades for the same beaches:

$\begin{array}{cccccccccc}\text{A+}& \text{A+}& \text{A+}& \text{A+}& \text{A+}& \text{A+}& \text{A+}& \text{F}& \text{F}& \text{F}\\ \text{A+}& \text{A+}& \text{F}& \text{A+}& \text{A+}& \text{F}& \text{A+}& \text{A+}& \text{F}& \text{A+}\end{array}$

1. a. Construct a bar chart for the wet weather grades.
2. b. Do the bar charts from Part (a) and from the previous exercise support the statement that beach water quality tends to be better in dry weather conditions? Explain.