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cbesta2chap08slides - NOTES Chapter 8 Interval Estimation...

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°±²³´µ¶ · °±²³´µ¶ · NOTES °±²³´±²µ ¶·¸ ¹±º»¹´±¼ ´½¾»¿²·²º ÀÁÂþÄŠƲ Ç´ ôÈÈ ² ɽ¼Ê²±º¼Ë · °±±±±±±±±±±±±±±±±±±±±± ±±±±±±±±±±±±±±±±±±±±±² x x x x °±±±±±±±±±±±±±±±±±±±±± ±±±±±±±±±±±±±±±±±±±±±² °±±±±±±±±±±±±±±±±±±±±± ±±±±±±±±±±±±±±±±±±±±±² x x x μ Chapter 8 Interval Estimation ° Interval Estimation of a Population Mean: Large-Sample Case ° Interval Estimation of a Population Mean: Small-Sample Case ° Determining the Sample Size to Estimate μ ° Interval Estimation of a Population Proportion °±±±±±±±±±±±±±±±±±±±±± ±±±±±±±±±±±±±±±±±±±±±² x Interval Estimation of a Population Mean: Large-Sample Case ° Margin of Error and the Interval Estimate ° Probability Statements about the Sampling Error ° Constructing an Interval Estimate: Large-Sample Case with σ Assumed Known ° Calculating an Interval Estimate: Large-Sample Case with σ Estimated by s
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Margin of Error and the Interval Estimate ° A point estimator does not provide information about how close the estimate is to the population parameter. ° For this reason statisticians usually prefer to construct an interval estimate . ° An interval estimate is constructed by subtracting and adding a value, called the margin of error , to a point estimate. ¸¹º»´ ¼½´º¾²´µ ¿ ²¶Àº»¹Á¼¶¶¹¶ ± Margin of Error and the Interval Estimate ° An interval estimate of the population mean is: ¿ ²¶Àº»¹Á¼¶¶¹¶ ± x x Probability Statements About the Margin of Error ° Precision Statement There is a 1 - α probability that the value of a sample mean will provide a margin of error of or less.
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