The lengths of pregnancies are normally distributed with a mean of 268 days and a standard deviation of 15 days. a. find the probability of a pregnancy lasting 309 days or longer. b. if the length of pregnancy is in the lowest 3%, then the baby is premature. find the length that separates premature babies from those who are not premature.

ian gone lie this got me confused

step-by-step explanation:

-2 is the right

set each factor equal to 0

4x-3 = 0

2x-1 = 0

solve for x.

4x-3=0

4x=3

x= 3/4

solve for x. 

2x-1= 0

2x= 1

x= 1/2

eventually after a few more steps, your answer should be 1/2 is less than or equal to x and 3/4 is greater than or equal to x

i'm sorry i don't know

step-by-step explanation: