Distribution for a hypothesis test or confidence interval
Explain how you would select a distribution for a hypothesis test or confidence interval?
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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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To calculate beta requires making a "what if" assumption about the true population parameter, where the "what-if" value is one that would cause the null hypothesis to be false.
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1. In exponential smoothing, if the smoothing constant, alpha, is 1, you will get the same forecast as obtainable using the last period technique.
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