A philanthropic organisation sent free mailing labels and greeting cards to a ra

Question

A philanthropic organisation sent free mailing labels and greeting cards to a random sample of 100,000 potential donors on their mailing list and received 5374 donations (a) Give a 99% confidence interval for the true proportion of those from their entire mailing list who may donate Astar member thinks that the true rate is 5 7% Gven the confidence interval you found, do you find that rate plausible? (a) What is the 99% confidence interval? The 99% confidence interval is from % to % Round to two decimal places as needed) (b) Given the confidence interval you found, is the proposed true rate, 57%, plausible? O Yes No Click to select your answer(s)

Explanation / Answer

A philanthropic organisation sent free mailing labels and greeting cards to a random sample of 100,000 potential donors on their mailing list and received 5374 donations (a) Give a 99% confidence interval for the true proportion of those from their entire mailing list who may donate Astar member thinks that the true rate is 5 7% Gven the confidence interval you found, do you find that rate plausible? (a) What is the 99% confidence interval? The 99% confidence interval is from % to % Round to two decimal places as needed) (b) Given the confidence interval you found, is the proposed true rate, 57%, plausible? O Yes No Click to select your answer(s)

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