A study by the department of education of a certain state was trying to determine the mean SAT scores of the graduating high school seniors. The study examined the scores of a random sample of 224 graduating seniors and found the mean score to be 492 with a standard deviation of 90. At the 95% confidence level, find the margin of error for the mean, rounding to the nearest tenth. (Do not write \pm±).

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mathhelper · Answer

It's been 65 years since I last did stats problems dealing with confidence
level and margins of error, forgot how to do that

Hated stats then, hated teaching stats, and still don't like it, sorry

Hope oobleck can help you out

Anonymous · Answer

A study by the department of education of a certain state was trying to determine the mean SAT scores of the graduating high school seniors. The study examined the scores of a random sample of 137 graduating seniors and found the mean score to be 448 with a standard deviation of 91. At the 95% confidence level, find the margin of error for the mean, rounding to the nearest tenth.