Question: please help! A random sample of 78 suspension helmets used by motorcycle riders and automobile race-car drivers was subjected to an impact test, and on

please help!

A random sample of 78 suspension helmets used by motorcycle riders and automobile race-car drivers was subjected to an impact test, and on 31 of these helmets some damage was observed. Find a 92% two-sided confidence interval on the true proportion (p) of helmets of this type that would show damage from this test. Your answer: 0 03cap

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