Assume the random variable x is normally distributed with mean u = 87 and standard deviation o = 5. Find the indicated probability. P(x<78) P(x<78) = (Round to four decimal places as needed.)

Assume that adults have IQ scores that are normally distributed with a mean of mμ=100 and a standard deviation σ= 15. Find the probability that a randomly selected adult has an IQ less than 127. The probability that a randomly selected adult has an IQ less tha 127 is

Let X represent the full height of a certain species of tree. Assume that X has a normal probability distribution with a mean of 6.9 ft and a standard deviation of 41.4 ft.Find the probability that the height of a randomly selected tree is between -109 ft and -30.4 ft.P(-109 < X < -30.4) = Enter your answer as a number accurate to 4 decimal places.