Chapter 10.1, Problem 13E

Starting salaries. The starting salaries (in thousands of dollars) of $20$ graduates, chosen at random from the graduating class of an urban university, were determined and recorded in the following table:

(A) Construct a frequency and relative frequency table using a class interval width of $4$ starling

at $30.5$.

(B) Construct a histogram.

(C) What is the probability that a graduate chosen from the sample will have a starting salary

above $\text{\$}42,500$ ? Below $\text{\$}38,500$ ?

(D) Construct a histogram ussing a graphing calculator