Question

The serum cholesterol levels of children aged 11 to 14 years follows a normal distribution with mean 163 mg/dl and standard deviation a 20 mg/dl. In a population of 1000 of these children, how many would be expected to have serum cholesterol levels between 164 and 190? between 147 and 1697? What integral gives the probability that a child has a serum cholesterol levels between 164 mgidl and 190 ma/di? dx (Type exact answers, using x as needed.) f children between 164 mg/dl and 190 mg/dl is - The expected number (Round to the nearest whole number needed.) What integral gives the probability that a child has a serum cholesterol levels between 147 mg/dl and 169 mg/dl? (D dX (Type exact answers, using x s needed.) The expected number of children between 147 mg/dl and 169 mg/dl is (Round to the nearest whole number needed.)

Answer 1

Nomal 3, 2) L63 1 9 S 1 plx19- x K 19, ^2) 164-1(3 el enpected eotelu 3 9 2 x_I6) 2 63 dx 2112) e/2. -1 =o-Unb eetdeaplo zYob