Question: Check if the sample size is large enough to use the normal distribution to make a confidence interval for p for each of the following

Check if the sample size is large enough to use the normal to make a confidence interval for p for each of the following cases.
a. n = 80 and p̂ = .85
b. n = 110 and p̂ = .98
c. n = 35 and p̂ = .40
d. n = 200 and p̂ = .08

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