(a)[4]
Find the two values that $x$ can take.
(b)[1]
Find the probability that neither confidence interval includes the true value of $p$.
Mathematics 9709 · AS & A Level · Sampling and estimation
Sampling and estimation — practice question
From a random sample of 100 students at Luciana’s college, $x$ reported that they liked exams. She then used these data to calculate an approximate 90\% confidence interval for the proportion, $p$, of all students at her college apresentado who liked exams. The interval width was $0.15792$.