Mathematics, 28.11.2019 05:31, flowersthomas1969
An srs of 25 recent birth records at the local hospital was selected. in the sample, the average birth weight was = 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. based on the 25 recent birth records, the sampling distribution of the sample mean can be represented by:
a. n(μ, 6.5).
b. n(μ, 1.30).
c. n(119.6, 1.30).
d. n(119.6, 6.5).
Answers: 2
and standard deviation 
, a large sample size can be approximated to a normal distribution with mean 
.
.
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An srs of 25 recent birth records at the local hospital was selected. in the sample, the average bir...
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