200,000 ÷ 2,000 can be simplified and solved as follows:
select one:
a. 200,000 ÷ 2,000 = 20
b. 200 ÷ 2 = 100
c. 20 ÷ 20 = 1
d. 20,000 ÷ 20 = 200

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.