A random sample of birth weights of babies resulted in a confidence interval est

Question

A random sample of birth weights of babies resulted in a confidence interval estimating the mean birth weight for babies born to mothers who did not use cocaine during their pregnancies. The confidence level calculated from the data was presented to the public on a national TV network.

1. For the given confidence interval determined from the data (6.5 lbs. - 7.0 lbs.). What do you believe is the typical weight (point estimate) of a newborn baby?

2. What is the Margin of Error?

3. What can you say about the confidence level associated with the reported Confidence Interval?

Can you please explain how the answers were calculated for the following questions

Explanation / Answer

1) point estimate =(lower limit +upper limit)/2 =(7+6.5)/2 =6.75

2)  Margin of Error =(upper limit -lower limit)/2 =(7-6.5)/2 =0.25

here confidence level associated  with the reported Confidence Interval is unknown as we do not have access to data or standard deviation.

( please revert for any clarification)

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