Question
A random sample of 87 eighth grade students' scores on a national mathematics assessment test has a mean score of 278. T his test result
A random sample of 87 eighth grade students' scores on a national mathematics assessment test has a mean score of 278. This test result prompts a state school administrator to declare that the mean score for the state's eighth graders on this exam is more than 275. Assume that the population standard deviation is 39. At =0.05, is there enough evidence to support the administrator's claim?
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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
