A poll in one country indicated that 48​% favor imposing the death penalty​ (the country currently does not have​ it). The poll did not report the sample size but​ stated, "Polls of this size are considered to be accurate to within 2.3 percentage points 99​% of the​ time." About how large was the sample​ size?

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Asked Nov 10, 2019
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A poll in one country indicated that 48​% favor imposing the death penalty​ (the country currently does not have​ it). The poll did not report the sample size but​ stated, "Polls of this size are considered to be accurate to within 2.3 percentage points 99​% of the​ time." About how large was the sample​ size?

 

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Step 1

Sample Size:

The formula for the sample si...

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n= p(1-p Here, Za is the critical value at 99% confidence level, p is the population proportion and E is the margin of error

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