Service center call lengths for a sample of 80 calls. See
Chapter , Problem 16.14(choose chapter or problem)
Service center call lengths for a sample of 80 calls. See Example 1.15 (page 18) for more details about these data. CALLS80 (a) Make a histogram of the call lengths. The distribution is strongly skewed. (b) The central limit theorem says that the sampling distribution of the sample mean x becomes Normal as the sample size increases. Is the sampling distributionroughly Normal for n 80? To find out, bootstrap thesedata using 1000 resamples and inspect the bootstrap distributionof the mean. The central part of the distributionis close to Normal. In what way do the tails depart fromNormality?
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