Chapter 8.5, Problem 1CQ

Consider the following normal curve with mean $\mu$ and standard deviation $\sigma$:

a. What is the $x$-coordinates of the peak of the curve?

b. What can you say about the symmetry of the curve?

c. Does the curve always lie above the $x$-axis? What happen to the curve as $x$ extends indefinitely to the left or right?

d. What is the value of the area under the curve?

e. Between what values does $68.27\%$ of the area under the curve lie?