A variable is normally distributed with mean $18$ and standard deviation $8.$ Use your graphing calculator to fi each of the following areas. Write your answers in decimal form. Round to the nearest thousandth as neede

a$)$ Find the area to the left of $19.$

b$)$ Find the area to the left of $11.$

c$)$ Find the area to the right of $17.$

d$)$ Find the area to the right of $21.$

e$)$ Find the area between $11$ and $30.$