Construct a Normal Probability Plot of the Given Data $$\begin{array} { r r r r } 500 & 750 & 630 & 480 \\550 & 650 & 720 & 780 \\820 & 960 & 1200 & 770\end{array}$$

Essay

Construct a normal probability plot of the given data. Use your plot to determine whether the data come from a normally distributed population
-The weekly incomes (in dollars)of a sample of 12 nurses working at a Los Angeles hospital are given below. $$\begin{array} { r r r r } 500 & 750 & 630 & 480 \\550 & 650 & 720 & 780 \\820 & 960 & 1200 & 770\end{array}$$