Arandom sample of 121 observations produced a sample proportion of 0.3. an approximate 95% confidence interval for the population proportion p is between a) 0.258 and 0.342 b) 0.202 and 0.398 c) 0.218 and 0.369 d) 0.231 and 0.369 e) 0.218 and 0.382 show work for rating

Step-by-step explanation:

A random sample of 121 observations produced a sample proportion of 0.3

Here,

for a 95% confidence level = 1.96

So the interval will be,

Marginal Error can be calculated as,

Putting all the values,

Hence, the interval will be,

n=1.75+1.75

step-by-step explanation:

3.5/2=1.75