The amount of biodegradable waste material produced each day by your manufacturing operations has a normal distribution, with a mean of 250 tons and a standard deviation of 10 tons. Using x to represent the random variable “tons of waste,” find
a. P(240 ≤ x ≤ 260)
b. P(250 ≤ x ≤ 275)
c. P(235 ≤ x ≤ 255)
d. P(230 ≤ x ≤ 240)
e. P(x ≥ 234)
f. P(x ≤ 226)