Question
Asked Oct 24, 2019

For a sample of 150 that has a mean of 6540 and a standard deviation =.89, calculate the 95% confidence interval.

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Expert Answer

Step 1

From the given data

Sample size 150, mean 6540 and standard deviation 0.89

Sample size n 150
Mean X 6540
Standard deviation o=0.89
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Sample size n 150 Mean X 6540 Standard deviation o=0.89

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Step 2

Formula for confidence interval

Confidence interval, CI=X+Z
Z-value is for 95% confidence interval is 1.96
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Confidence interval, CI=X+Z Z-value is for 95% confidence interval is 1.96

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Step 3

Now, 95% confidence in...

CI X-Z
0.89
-6540 1.96
v150
6540 0.1424296636
-(6539.88,6540.14)
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CI X-Z 0.89 -6540 1.96 v150 6540 0.1424296636 -(6539.88,6540.14)

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