It’s a new semester! Students are grouped into three clubs, which each has 10, 4 and 5 students. In how many ways can teacher select 2 students from all these clubs so they are from different clubs?

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.