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A philanthropic Organization  sent free mailing labels and greeting cards to a random sample of 100,000 potential...

A philanthropic Organization  sent free mailing labels and greeting cards to a random sample of 100,000 potential donors on their mailing list and received 5074 donations.

a) what is the 95% confidence interval? _% to _%

b) given the interval you found is the proposed true rate 5.2% plausible?

Math   Statistics-And-Probability   
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