Proportion of test takers
If IQ scores are normally distributed with a mean of 100 points and a standard deviation of 15 points, what proportion of test takers have a score equal or greater than 115?
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Find the test statistic, P-value, and critical value. Round to 3 decimal places. Claim: The mean IQ score of statistics professors is greater than 118. Sample data: n = 50, x = 120. Assume that ? = 15 and the significance level is ? = .05
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Explain how you would select a distribution for a hypothesis test or confidence interval?
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