Is a confidence interval really helpful in deciding

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Q. A careful count of 13,789 carcasses of bugs killed by "mosquito zappers" used in homes near water showed which only 18 were mosquitoes. (a) Construct a 90 percent confidence interval for the proportion of all zapped bugs which are mosquitoes. (b) Is a confidence interval really helpful in deciding whether the devices fulfil their purpose? Explain.

Reference no: EM1384879

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