(main)[5]
Calculate $\alpha$, giving your answer to 2 significant figures.
Mathematics 9709 · AS & A Level · Hypothesis testing
Hypothesis testing — practice question
From a random sample of $75$ students chosen at a large college, a survey showed that $15$ said they owned a car. Using this outcome, an approximate $\alpha\%$ confidence interval for the proportion of all students at the college who own a car was found. The width of the interval was $0.162$.