Describe the appearance of the graph of y=-4x+ 4. ob
a line that slopes up
V-shape that goes up then down
a line that slopes down
V-shape that goes down then up
od

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.