In: Statistics and Probability
You want to estimate the proportion of gas stations in the state that have stopped accepting cash. You take a simple random sample of 150 stations. Twelve stations in the sample indicate that they have stopped accepting cash.
p^ = 12/150 = 0.08
a)
Confidence interval
= (0.037 , 0.123)
b)
Confidence interval
= (0.023 , 0.137)