Textbook ExpertVerified Tutor
8 Nov 2021
Given information
The distribution function is normally distributed.
The random variable is lying within the two standard deviations of the mean.
Step-by-step explanation
Step 1.
- The random variable is lying within the two standard deviations of the mean.
- That implies the value of is lying between and .
- Substitute 0 for and 1 for and find the values of and .