Posted by **lee** on Thursday, October 6, 2011 at 9:08am.

a health care professional wishes to estimate the birth weight of infants how large a sample must she select to be 90% confident that the true mean is within 6 ounces of e sample mean. the standard deviation of birth weights is

is known to be 8 ounces

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**Writeacher**, Thursday, October 6, 2011 at 11:04am
Please type your __subject__ in the **School Subject** box. Any other words, __including obscure abbreviations__, are likely to delay responses from a teacher who knows that subject well.

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**Sian**, Sunday, November 13, 2016 at 12:51pm
birth weight of infants. a health care professional wishes to estimate the birth weights of infants. how large a sample must be obtained if she desires to be 90% confident that the true mean is within 2 ounces of the sample mean? assume sigma=8 ounces

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