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What is the confidence interval estimate of the pmes

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Reference no: EM131549716

Question: At western university the historical mean of scholarship exam scores for freshman applications is 900. A historical population standard deviation = 180 is assumed known. Each year, the assistant dean uses a sample of applications to determine whether the mean exam score for the new freshman applications has changed.

a. State the hypotheses, what is the 95% confidence interval est. of the population mean examination score (PMES) if sample of 200.

Reference no: EM131549716

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