if you help me with this i will mark you -est but you gotta tell me how to because i don't know how ? \

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.

If you could give answers for the problems in the picture with a mild explanation

If the mzc is greater than the mze, then ab is