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.
Yes, (must be at least 15 years old)
Answer:
u are fricked my dude
Step-by-step explanation:
The 3 is a positive integer and the 7 is a negative integer so you would do "KFC" also known as (Keep, Flip, and Change)
3
("Keep" the 3 positive)
-
("Flip"the minus sign into a plus sign)
-7
("Change" the negative sign into a positive sign)
So therefore, you would have:
3 + 7, which equals 10
Answer:
.012km/hr
Step-by-step explanation:
(1200cm)(1m/100cm)(1km/1000m)=0.012km/hr