Help me I’m very confused with this question

Suppose medical records indicate that the length of newborn 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 between 14.8 and 25.2 inches long.

Type the next three numbers in a sequence 80, 90, 85, 95, 90, 100, 95, 105

Which expression gives the distance between the two points 2 5 and 4 8