TIMMSS Test - Statistic Question

Dec 29th, 2014
Anonymous
Category:
Accounting
Price: $5 USD

Question description

On the Trends in International Mathematics and Science Study (TIMSS) test in a recent year, the United States scored an average of 508 (well below South Korea, 597; Singapore, 593; Hong Kong, 572; and Japan, 570). Suppose that we take a random sample of n United States scores and that the population standard deviation is 72. If the probability that the mean of the sample exceeds 520 is 0.0985, what was the sample size?

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