Appropriate use of the interval requires a large sample. For each of the following combinations of n and p, indicate whether the sample size

Appropriate use of the interval

requires a large sample. For each of the following combinations of n and ˆ p, indicate whether the sample size is large enough for this interval to be appropriate.
a. n = 100 and ˆ p = 0.70
b. n = 40 and ˆ p = 0.25
c. n = 60 and ˆ p = 0.25
d. n = 80 and ˆ p = 0.10

p t (z critial value) + (z critial value)