95%(19)18 out of 19 people found this document helpful
This preview shows page 1 - 3 out of 3 pages.
Describe carefully how we can use this one sample to create a bootstrap statistic. Be specific.Mix up the pieces and pull one out and record whether or not it is orange and then put it back. Mix them up again, pull one out again and record whether or not it is orange. Put it back and continue the process until we have recorded the result for 55 pieces sampled this way. Compute the proportion of orange candies from this bootstrap sample.Quick Self-Quiz: Bootstrap SamplesA sample consists of the following values: 8, 4, 11, 3, 7.Which of the following are possible bootstrap samples from this sample? a). 8, 3, 7, 11 No because the sample size does not match.b). 4, 11, 4, 3, 3 Yes.c). 3, 4, 5, 7, 8 No, because 5 is not in the original sample.d). 7, 8, 8, 3, 4 Yes.
page 2Example 3: Global WarmingWhat percentage of Americans believe in global warming? A survey on 2,251 randomly selected individuals conducted in October 2010 found that 1,328 answered Yes to the question “Is there solid evidence of global warming?” A bootstrap distribution for this data is shown. Use the information there to give and interpret a 95% CI for the proportion of Americans who believe there is solid evidence of global warming.The sample proportion is 0.590 and the standard error from the bootstrap distribution is 0.010 so we compute the 95% confidence interval using 0.590