An SRS of 25 recent birth records at the local hospital was selected. In the sam

Question

An SRS of 25 recent birth records at the local hospital was selected. In the sample, the average birth weight was q4-1.png = 119.6 ounces. Suppose the standard deviation is known to be = 6.5 ounces. Assume that in the population of all babies born in this hospital, the birth weights follow a Normal distribution, with mean . The standard deviation of the sampling distribution of the mean is: 6.52 ounces. 0.38 ounces. 1.30 ounces. 0.02 ounces. Why is the central limit theorem satisfied? A. population is normally distributed. B. n>30

Explanation / Answer

1) standard deviation of the sampling distribution of the mean =std deviation/(n)1/2 =6.5/(25)1/2 =1.3

therefore option 1.30 ounces is correct

2) option A is correct population is normally distributed.

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