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3. A sample of 50 earthquakes have depths with a mean of 9.808km. Assume the population...

3. A sample of 50 earthquakes have depths with a mean of 9.808km. Assume the population standard deviation is 5.013km.

a. Construct a 98% confidence interval estimate of the mean of all such depths.

b. Determine the margin of error.

c. write a brief statement that interprets the interval.

Math   Statistics-And-Probability   
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Answer #1

3

Given,

b.

Confidence level = 0.98

Margin of error =

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a.

98% confidence interval is

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c.

Interpretation: We are 98% confident that the average depth of earthquake is lies between 8.16 km to 11.46 km.

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