Part iii) Consider the statement: 'The distribution of the mean printing speed of the sampled printers is Normal." O A. It is an incorrect statement. The distribution of the mean printing speed of the...

Extracted text: Part iii) Consider the statement: 'The distribution of the mean printing speed of the sampled printers is Normal." O 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, and it is a result of the Central Limit Theorem. C. It is a correct statement, but it is not a result of the Central Limit Theorem.


Extracted text: An HP laser printer is advertised to print text documents at a speed of 18 ppm (pages per minute). The manufacturer tells you that the printing speed is actually a Normal random variable with a mean of 17.57 ppm and a standard deviation of 3 ppm. Suppose that you draw a random sample of 11 printers. Part i) Suppose the number of printers drawn is quadrupled. How will the standard deviation of sample mean printing speed change? O A. It will decrease by a factor of 2. O B. It will increase by a factor of 4. O C. It will increase by a factor of 2. O D. It will decrease by a factor of 4. O 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? O A. It will decrease by a factor of 4. O B. It will increase by a factor of 2. O C. It will decrease by a factor of 2. O D. It will increase by a factor of 4. O E. It will remain unchanged.