40 POINTS Find the derivative with respect to x of the integral from 2 to x squared of the cosine of the quantity t squared plus 1, dt.

(see picture attached)

Answer choices:
– 2xsin(x^4 + 1)
2xcos(x^4 + 1)
– 4x^3 sin(x^4 + 1)
4x^3 cos(x^4 + 1)

Assume that adults have iq scores that are normally distributed with a mean of mu equals 100 and a standard deviation sigma equals 20. find the probability that a randomly selected adult has an iq between 80 and 120.assume that adults have iq scores that are normally distributed with a mean of mu equals 100 and a standard deviation sigma equals 20. find the probability that a randomly selected adult has an iq between 80 and 120.