QMS 202 Study Guide - Final Guide: Confidence Interval, Probability Distribution, Standard Deviation
1 May 2012
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Document Summary
A sample of 20 students were asked to fill in a survey on gender, how many hours spent studying for the test and what was the grade earned on the same test that they had studied for. Hours: male 14, female 17, female 3, female 6, Male 17, male 3, male 8, male 4, female 20, male. 15, female 7, male 9, male 0, male 5, female 11, Female 15, male 18, female 13, male 8, male 4. The conditions are met, therefore, it is normally distributed: before you construct a 91% confidence interval estimate of the proportion of all female students, state the critical value: z = 1. 6954. Invn, area: 0. 91: the point estimate for a 91% confidence interval estimate of the proportion of all female students is: x = A survey is planned to determine the mean annual family medical expenses of employees of a large company.
