According to a recent national health statistic report the weight of male babies less than 2 months old is in the u. s is normally distributed with mean 11.5 pounds and standard deviation 2.7 pounds a) what proportion of babies weigh less than 15 pounds b) what proportion of babies weigh between 13 and 15 pounds c) is it unusual for a baby to weigh more than 17 pounds

The mean pounds;

the standard deviation is pounds.

Let the variable be the weight of male babies less than 2 months old. It is normally distibuted with a law

Find the variable

that is normally distributed with a law

Part A.

If X=15 pounds, then

and

Part B.

If X=15 pounds, then

If X=13 pounds, then

and

Part C.

If X=17 pounds, then

and

This means that approximately 2% of babies are born with weight more than 17 pounds and, therefore, seems to be quite unusual for a baby.

  or  

step-by-step explanation:

if the four friends split the cost, p, of the pizza evenly, then each friend pays one-fourth of the cost of the pizza.

the expression is   or