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An SRS of 18 recent birth records at the local hospital was selected.pdf

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An SRS of 18 recent birth records at the local hospital was selected. In the sample, the average birth weight was 119.6 ounces and the standard deviation was 6.5 ounces. Assume that in the population of all babies born in this hospital, the birth weights follow a Normal distribution, with mean ?. Reference: Ref 18-1 The standard error of the mean is Solution for a small sample, you should use the t-dist. with 18-1=17 deg. freedom. From the t-table, t=2.110 cuts off .025 in each tail. So ME is 2.11 (6.5)/sqrt(18)=3.233 ounces.

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An SRS of 18 recent birth records at the local hospital was selected. In the sample, the average birth weight was 119.6 ounces and the standard deviation was 6.5 ounces. Assume that in the population of all babies born in this hospital, the birth weights follow a Normal distribution, with mean ?. Reference: Ref 18-1 The standard error of the mean is Solution for a small sample, you should use the t-dist. with 18-1=17 deg. freedom. From the t-table, t=2.110 cuts off .025 in each tail. So ME is 2.11 (6.5)/sqrt(18)=3.233 ounces

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An SRS of 18 recent birth records at the local hospital was selected.pdf

  • 1. An SRS of 18 recent birth records at the local hospital was selected. In the sample, the average birth weight was 119.6 ounces and the standard deviation was 6.5 ounces. Assume that in the population of all babies born in this hospital, the birth weights follow a Normal distribution, with mean ?. Reference: Ref 18-1 The standard error of the mean is Solution for a small sample, you should use the t-dist. with 18-1=17 deg. freedom. From the t-table, t=2.110 cuts off .025 in each tail. So ME is 2.11 (6.5)/sqrt(18)=3.233 ounces