A scientist had two solutions with she labeled solution a and solution B each contain salt she know that solution a is 55% salt and solution B has a 80% salt she wants to obtain 80 oz of mixture that is 70% salt how many ounces of a solution should you use

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.