Abag contains 4 brown marbles, 3 green marbles, 2 red marbles, and 1 purple marble. calculate the probability of drawing each color, and write each answer as a fraction, as a percent, and as a decimal.

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.