Part i) Suppose the number of printers drawn is quadrupled. How will the standard deviation of sample mean printing speed change? A. It will decrease by a factor of 4. B. It will increase by a factor of 4. C. It will increase by a factor of 2. D. It will decrease by a factor of 2. E. It will remain unchanged.
Part ii) Suppose the number of printers drawn is quadrupled. How will the mean of the sample mean printing speed change? A. It will increase by a factor of 4. B. It will decrease by a factor of 2. C. It will increase by a factor of 2. D. It will decrease by a factor of 4. E. It will remain unchanged.
Part iii) Consider the statement: 'The distribution of the mean printing speed of the sampled printers is Normal.' A. It is an incorrect statement. The distribution of the mean printing speed of the sample is not Normal. B. It is a correct statement, but it is not a result of the Central Limit Theorem. C. It is a correct statement, and it is a result of the Central Limit Theorem.
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