Find a formula for the nth partial sum of the series and use it to determine if the series converges or diverges. if a series converges, find its sum. summation from n equals 1 to infinity ( √(n+1) - √(n))

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.