Sec3-3Examples1 (2).docx - Section 3.3 Constructing...

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Section 3.3: Constructing Bootstrap Confidence IntervalsExample 1: Textbook PricesPrices of a random sample of 10 textbooks (rounded to the nearest dollar) are shown:$132 $87 $185 $52 $23 $147 $125 $93 a). What is the sample mean?b). Describe carefully how we could use cards to create one bootstrap statistic from this sample. specific.c). Where will be bootstrap distribution be centered? What shape do we expect it to have?Example 2: Reese’s Pieces We wish to estimate the proportion of Reese’s Pieces that are orange, and we have one package of Reese’s Pieces containing 55 pieces. Describe carefully how we can use this one sample to create a bootstrap statistic. Be specific.Quick Self-Quiz: Bootstrap SamplesA sample consists of the following values: 8, 4, 11, 3, Which of the following are possible bootstrap samples from this sample? $85 $72Be 7.a)8, 3, 7, b). 4, 11, 4, c). 3, 4, 5, d). 7, 8, 8,
11
3, 3
7, 8
3, 4
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