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 4981 donations. (a) Give a 95% confidence interval for the true proportion of those from their entire mailing list who may donate. (b) A staff member thinks that the true rate is 4.7%. Given the confidence interval you found, do you find that rate plausible? (a) What is the 95% confidence interval? The 95% confidence interval is from to (Round to two decimal places as needed) CRED

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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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 4981 donations. (a) Give a 95% confidence interval for the true proportion of those from their entire mailing list who may donate. (b) A staff member thinks that the true rate is 4.7%. Given the confidence interval you found, do you find that rate plausible? (a) What is the 95% confidence interval? The 95% confidence interval is from to %. (Round to two decimal places as needed.)
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 4981 donations.
(a) Give a 95% confidence interval for the true proportion of those from their entire mailing list who may donate.
(b) A staff member thinks that the true rate is 4.7%. Given the confidence interval you found, do you find that rate plausible?
(a) What is the 95% confidence interval?
The 95% confidence interval is from to
(Round to two decimal places as needed.)
KIED
Transcribed Image Text: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 4981 donations. (a) Give a 95% confidence interval for the true proportion of those from their entire mailing list who may donate. (b) A staff member thinks that the true rate is 4.7%. Given the confidence interval you found, do you find that rate plausible? (a) What is the 95% confidence interval? The 95% confidence interval is from to (Round to two decimal places as needed.) KIED
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