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Find the standardized test statistic? z

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Reference no: EM132201144

A random sample of 78 eighth grade? students' scores on a national mathematics assessment test has a mean score of 262. 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 260. Assume that the population standard deviation is 34. At alpha α equals =0.06?, is there enough evidence to support the? administrator's claim?

Find the standardized test statistic? z, and its corresponding area.

Reference no: EM132201144

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