Suppose a Normal Model Describes the Number of Pages Printer

question 75

Multiple Choice

Suppose a Normal model describes the number of pages printer ink cartridges last. If we keep track
Of printed pages for the 47 printers at a company's office, which must be true?
I. The page counts for those ink cartridges will be normally distributed.
II. The histogram for those page counts will be symmetric.
III. 95% of those page counts will be within 2 standard deviations of the mean.

• A) II only
• B) I only
• C) I, II, and III
• D) none of these
• E) II and III

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