Answer:
Step-by-step explanation:
Let X be the lengths of a particular animal's pregnancies
X is N(252, 20)
(a) What proportion of pregnancies lasts more than 262 days?

(b) What proportion of pregnancies lasts between 227 and 257 days?

(c) What is the probability that a randomly selected pregnancy lasts no more than 237 days?
P(X<237) = 0.2266
(d) A "very preterm" baby is one whose gestation period is less than 202 days. Are very preterm babies unusual?

Yes very unusual since probability is very near to 0.
0.955 * 1300 = 1241.5. 0.88 * 1241.5 = 1092.52 Round 1092.52 to 1093. That's the only answer I can think of.
706286 to the nearest ten thousand is 706,000
Answer:
690,000
Step-by-step explanation: