A researcher obtains a 95% confidence interval for the mean weight of newborn ba

Question

A researcher obtains a 95% confidence interval for the mean weight of newborn babies of (6.5 lbs, 8.5 lbs). Which of the following is the best interpretation of this confidence interval? A) We are 95% confident that the mean weight of all newborn babies is between 6.5 and 8.5 lbs. B) 95% of newborn babies in the sample weighed between 6.5 and 8.5 lbs. C) We may reject the null hypothesis that the mean weight of newborn babies is equal to 7 lbs at a 0.05 level of significance. D) 95% of all newborn babies weigh between 6.5 and 8.5 lbs. E) There is a 95% probability that the mean weight is between 6.5 and 8.5 lbs.

Explanation / Answer

option A is correct: we are 95% confident that the mean weight of all newborn babies is b/w 6.54 and 8.5 lbs

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