A health care prifessional wishes to estimate the birth weights of infants. How large a sample must be obtained if he desires to be 99 confident that the true mean is within 3 ounces of the sample mean? Assume that the standard deviation of the population is 10 ounces
A health care prifessional wishes to estimate the birth weights of infants. How large a sample must be obtained if he desires to be 99 confident that the true
Given Information :
A health care professional wishes to estimate the birth weights of infants. He desires to be 99 confident that the true mean is within 3 ounces of the sample mean. Assume that the standard deviation of the population is 10 ounces .
Often times we are interested in estimating a population parameter like the population mean, within a certain range of precision.
Such precision is usually referred to as margin of error (MOE).
The following information has been provided :
At 99 % confidence level , the critical value for the significance level is
.
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