Show all calculations Hemoglobin for a group of pregnant women attending a clinic in Johannesburg is thought to be normally distributed with mean 12 and standard deviation 2.8. Mild anemia is defined as HB between 11 and 9, while severe anemia is defined as less than 9.

What is the probability that a randomly selected women from this clinic would have (4 d.p)

1. Mild anemia?
2. Severe anemia?

What is the anemia level that corresponds to the probability of ?(2 d.p)

c.The start of the least 25% (lower quartile)?

d. Begining of the upper 10% (top decile)?

e. Between the 75% and 25%? [ and ]