Question

Construct a curve then shade the region corresponding to the obtained area from The weights (in kg) of 11-STEM B follow a normal distribution and has a mean of 50 and a standard deviation of 5. How many students have weights greater than 57?

Answer 1

$$P(X>57)=1-P(Z\le\dfrac{57-50}{5})$$

$$=1-P(Z\le1.4)=0.0808$$