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QMS Lecture Summary.doc

3 Pages

Quantitative Methods
Course Code
QMS 202
Clare Chua

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Lecture 11Chapter 10sections 101 and 102Go through example 101 on page 4082Go through my PowerPoint slides3Calculator Lesson 7B if you have Casio fx9750GII to learn how to use the function INTR to find the confidence interval to estimate the population meanSummary of Lecture 1What is unknownPopulation Mean and Population proportionWhat is knownSample mean and sample proportionWe can always take a sample of quantitative data via survey and calculate the sample meanWe will use this sample mean to construct an interval that will contain the population mean c of the timeThis c ie 95 90 92 etc indicates our confidence that this interval will contain the true population mean We use this c to calculate the z and t values known as critical values where this c is treated as area under the curveI have shown you two ways of calculating the confidence interval for 1Using the formula refer to equation 101 on page 407 of the textbook2using the calculator function INTR on page 409When you select INTR function you will encounter Z and t
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