Birth weights of babies born to full-term pregnancies follow roughly a normal distribution. at meadowbrook hospital, the mean weight of babies born to full-term pregnancies is 7 pounds with a standard deviation of 14 ounces (1 pound = 16 ounces). dr. watts (who works at meadowbrook hospital) has four deliveries (all for full-term pregnancies) coming up during the night. assume that the birth weights of these four babies can be viewed as a simple random sample. what is the probability that all four babies will weigh more than 7.5 pounds?

0.006496

Step-by-step explanation:

Given :

  [∵ 1 pound = 16 ounces]

Using , for x= 7.5 , we have

Using standard normal z-value table,

P-value

Since, birth weights of these four babies can be viewed as a simple random sample. i.e. probability that bay has weigh more than 7.5 pounds is equal for all babies.

Also, the weight of babies are independent .

Then, the  the probability that all four babies will weigh more than 7.5 pounds =[Rounded to nearest 4 decimal places]

you are saying it as if a fact, not a question, but yes, you would be correct? ; )

step-by-step explanation:

nope.   happens to me as well.

-aparri