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Author Question: An elementary school principal wants to know the mean number of children in families whose children ... (Read 251 times)

V@ndy87

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on: Aug 30, 2019
An elementary school principal wants to know the mean number of children in families whose children attend this school. He checks all the families using the school's registration records, and we use the computer to create a 95% confidence interval based on a t-distribution. This procedure was not appropriate. Why?
◦ The recent record-setting family with twelve children is probably an outlier.
◦ At a given school families are not randomly selected.
◦ The entire population of families was gathered so there is no reason to do inference.
◦ The population standard deviation is known, so he should have used a z-model.
◦ Since these families are from only one school, the family sizes may be skewed.
Stats: Modeling the World ¦ Bock, Velleman, De Veaux ¦ 4th Edition
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Marked as best answer by V@ndy87 on Aug 30, 2019

epscape

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Reply #1 on: Aug 30, 2019
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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V@ndy87

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Reply 2 on: Aug 30, 2019
:D TYSM

T4T

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Reply 3 on: Yesterday
Gracias!

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