Using the standard normal distribution table, answer the following questions:

Question

In a study related to pregnant women, it was observed that the hemoglobin values of this group showed normal distribution and the mean was 12.5 gr / dl and the standard deviation was 1.0 gr / dl. Accordingly, pregnant women.
i. What is the probability of the hemoglobin values being between 11.5‐13.0 gr / dl?

Answer 1

The probability of the hemoglobin values being between 11.5‐13.0 gr / dl is 0.6826.

Answer 2

NOPE,

using proper normal distribution calculations, the
prob(between 11.5 and 13) = .5328