Let X be normally distributed with mean = 18 and standard deviation a=12. [You may find it useful to reference the z table.)
a. Find PX ≤ 0). (Round your final answer to 4 decimal places.)
PIX ≤ 0)
b. Find PX> 6). (Round your final answer to 4 decimal places.)
P(X>6)
c. Find P(6 ≤ x ≤ 9). (Round your final answer to 4 decimal places.)
P(6 ≤x≤9)
d. Find P12 ≤ x ≤24). (Round your final answer to 4 decimal places.)
