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Mathematics, 07.03.2020 04:40, christi1175
An SRS of 25 recent birth records at the local hospital was selected. In the sample, the average birth weight was x = 119.6 ounces. Suppose the standard deviation is known to be σ = 6.5 ounces. Assume that in the population of all babies born in this hospital, the birth weights follow a Normal distribution, with mean μ . The standard deviation of the sampling distribution of the mean is: a. 0.38 ounces. b. 6.52 ounces. c. 1.30 ounces. d. 0.02 ounces.
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