### The Normal Distribution – Find Value of Pronumeral

The video below is from the **Find the Value of Pronumerals** sub topic. It has my solution to Question 4 from the 2018 VCAA Maths Methods Multi Choice exam.

This type of question relies on an understanding of the basic method of finding a probability value and how to use symmetry to find the value of a pronumeral – 79% of students answered part a correctly and 41% answered part b correctly.