A psychologist wants to estimate the standard deviation of 1Q scores It is widely believed that 1Q scores follow a normal distribution Her random sample of 25 1Q scores has a mean of 103 8 and a standard deviation of 12 9 Find the 95 confidence interval for the population standard deviation based ...

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Investment Analysis and Portfolio Management

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A psychologist wants to estimate the standard deviation of 1Q scores. It is widely believed that...

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Investment Analysis and Portfolio Management

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