Question: Return to Exercise 6 in Chapter 4. Calculate the mean and standard deviation if you have not already done so. Given that this data is

Return to Exercise 6 in Chapter 4.

Calculate the mean and standard deviation if you have not already done so. Given that this data is a sample, calculate the 90 per cent, 95 per cent and 99 per cent confidence intervals around the mean. Provide a management interpretation of these in the context of the problem and explain why the interval gets larger.

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