Find to 4 decimal places the following binomial
probabilities using the normal approximation.
a. n = 160, p = 0.48, P(x = 78)
P(x = 78) =
b. n = 100, p = 0.53, P(54 ? x ? 62)
P(54 ? x ? 62) =
c. n = 90, p = 0.44, P(x ? 37)
P(x ? 37) =
d. n = 108, p = 0.72, P(x ? 74)
P(x ? 74) =