I need extreme help

Question

Suppose medical records indicate that the length of new born babies (in inches) is normally distributed with a mean of 20 and a standard deviation of 2.6. Find the probability that a given infant is longer than 20 inches.

Answer 1

So you can normalize the data and look in the standard normal chart...or you can just recognize that the question is asking for the probability from the mean to the right all the way to infinity.  Then you think about how much all the probabilities add up to and.... hmmmm