STAT 101 Lecture Notes - Lecture 10: Confidence Interval, Standard Deviation
24 Jul 2017
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Document Summary
Stat 101 - lecture 10 - inference for means. Material covered in week 10 corresponds to chapters 20 and 21 from textbook. Chapter 2- - inference for population mean extended to more realistic setting where standard deviation is unknown. Chapter 21 considers problem of comparing 2 populations. Common type of problem where we have sample data from each of 2 populations. Although 2 populations can be diff in various ways, we restrict our attention to comparing differences of means from 2 populations. Population means are unknown & this is why we require testing procedures. Chapter 20, we emit using technology section which provides examples of confidence interval calculations using technology unavailable to us. Be familiar w/ conditions necessary for proposed methods of inference for population mean. Both confidence intervals & tests of significance require calculation of sample standard deviations. Confidence intervals & testing for the population mean.
