Caption: Probability that a 60 year old female has BMI > 40?
Text: Again we standardize P(X > 40) = P(Z > (40-28/7 = 12/7 = 1.71.

Now we need to compute P(Z>1.71). If we look up Z=1.71 in the standard normal distribution table, we find that P(Z<1.71) = 0.9554.

P(Z<1.71) = 1-0.9554 = 0.0446. Less than 5% of the women aged 60 have BMI exceeding 40.