Given:
The time to complete an exam is approximately Normal with a mean of 49 minutes and a standard deviation of 9 minutes.
So,
![\begin{gathered} \operatorname{mean}=\mu=49 \\ standarddeviation=\sigma=9 \end{gathered}]()
Given the following figure of the bell curve represents the distribution for testing times.
We will fill in the indicated boxes as follows by calculating the value of each box:
