# Question

Alan wants to estimate the proportion of adults who walk to work. In a survey of 10 adults, he ﬁnds 0 who walk to work. Explain why a 95% conﬁdence interval using the normal model yields silly results. Then compute and interpret a 95% conﬁdence interval for the proportion of adults who walk to work using Agresti and Coull’s method.

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