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Suppose the scores of a standardized test are normally distributed. If the population standard deviation is 2 points, what minimum sample size is needed to

Suppose the scores of a standardized test are normally distributed. If the population standard deviation is 2 points, what minimum sample size is needed to be 90% confident that the sample mean is within 1 point of the true population mean?z0.10z0.05z0.025z0.01z0.0051.2821.6451.9602.3262.576Use the table above for the z-score, and be sure to round up to the nearest integer.

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