Convert the binomial probability to a normal distribution probability using continuity correction.
P (x <= 150).
P (x <= 150)
There are no more than 150 possible successes.
The discrete midpoint values are 150, 151, 152, … . The corresponding interval for the continuous normal distribution probability is x <= 150.5.
Thus, the binomial probability P(x < 150) can be converted as P(x <= 150.5).