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The Department of Health and Human Services wants to know the average income of general assistance...

The Department of Health and Human Services wants to know the average income of general assistance recipients. A sample of 60 recipients shows a sample mean of $17,400 with a standard deviation of $3,150. According to these information: (1) Place a 95% confidence interval around your best estimate of the average income of general assistance recipients. (2) Interpret the meaning of the confidence interval you find in

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Answer #1

We have mean = $17400 Standard Deviation = $3150

And n= 60

Now 95% Confidence interval is

Hence 95% confidence interval is (16602.94, 18197.06).

Now we can say

A 95% confidence interval (16602.94, 18197.06) is a range of values that you can be 95% certain contains the true mean of the population.

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