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The 99% confidence interval for the true mean is given by:
where:
is the sample mean = 69.7
is the standard deviation = 2.8
is the test statistics = 2.58 for for 99% confidentce interval.
n is the sample size = 772.
Therefore, the 99% confidence interval is:
where:
n is the sample size = 772.
Therefore, the 99% confidence interval is:
<h2><u>Answer:</u></h2><h2><u></u>
<u></u></h2><h2><u></u></h2><h2><u>Solution Steps:</u></h2>
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<h3>1.) Add −5 and 22:</h3>
<em> - You could also solve this by flipping the numbers around and subtracting 22 - 5, Which still gives you 17. </em>
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So your answer is .
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