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Worksheet 6 1. The life span of an electronic chip used in a high-powered micro computer is estimated to be 623.35 hours from a
Worksheet 6 1. The life span of an electronic chip used in a high-powered micro computer is estimated to be 623.35 hours from a random sample of 12 chips. The sample variance was 400 hours. The manufacturer claims that the true mean life of the electronic chips is 633 hours. a. Construct a 95% confidence interval for the true mean life of a chip. b. What assumption have you made in your answer to a)? c. Does your confidence interval indicate that the manufacturer's claim is untrue? d. Is a confidence interval the best method to test the manufacturer's claim? Why or why not?
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Probability and Random Processes With Applications to Signal Processing and Communications
Authors: Scott Miller, Donald Childers
2nd edition
123869811, 978-0121726515, 121726517, 978-0130200716, 978-0123869814
