Question

On average, junior girls own 10 pairs of shoes with a standard deviation of 1.5 pairs of shoes. the distribution of shoes follows an approximately normal curve. what is the probability of selecting a junior girl that owns 12 or more pairs of shoes

Answer 1

Answer- i think it's 0.0918

Answer 2

Solve for z score:
z(12)=(12-10)/1.5=4/3
then >/ "less than and equal to"
p(x>/12) = p(z>/4/3)=.0912