Let X be normally distributed with a mean = 12 and Standard deviation =3

Let X be normally distributed with mean / = 12 and standard deviation o = 3. [You may find it useful to reference the z table.] a. Find P(X s O). (Round "z" value to 2 decimal places and final answer to 4 decimal places.) P ( X 50) b. Find P(X> 6). (Round "z" value to 2 decimal places and final answer to 4 decimal places.) P(X > 6) c. Find P(3 s X= 15). (Round "z" value to 2 decimal places and final answer to 4 decimal places.) P (3 SX s 15) d. Find P(6 s X $ 15). (Round "z" value to 2 decimal places and final answer to 4 decimal places.) P(6 s X s 15)