Question

B. Less than 50? 1. Convert the raw score of 50 to a z-score. 2. Draw the normal curve and locate the given z-value or values at the base line of the curve. Then draw a vertical line through the given z-value or values and shade the required region.

Answer 1

(a) We have that:

$\mu=42$

$\sigma=5$

z score is

$Z=\frac{x-\mu}{\sigma}=\frac{50-42}{5}=1.6$

(b) Normal curve is-