Use R codes and Z tables only . The birth weights of babies are normally distributed with mean of 120 ounces and standard d of 20 ounces. A "low birth weight" baby is that one born in 5th percentile. (A) What is the threshold weight of low birth weight baby. (B) Calc the probability that birth weight of babies are 1) below 60 2) above 150 3) between 100 & 140 (C) Out of 10 babies born, what's the probability that exactly 1 has "very low weight"(below 60) (D) Out of 10 babies born, what's the probability that less than 2 have "very low weights"(below 60)

b , given a binomial distribution + with h= 150 9 p : 0.4 1 Cake P (X x 50 ) using exact distribution. Coke P ( t' , 50 ) using normal approximation. Given a Poisson distribution , for t' with 2: 30 calc P (X" ( 15) using hotmal approximation