The manufacturer of a laser printer reports that the average number of pages a cartridge prints before replacing it is 12,200. The distribution of printed pages per cartridge approximates the normal probability distribution and the standard deviation is 820 pages. The manufacturer wants to provide guidelines to potential customers on how long they should expect a cartridge to last. How many pages should the manufacturer state per cartridge if you want 99% certainty at all times? In 2004 and 2005, the median annual cost to attend a private university in the United States was $20,082. Assume that the distribution of annual costs follows a normal probability distribution and that the standard deviation is $4,500. 95% of private university students pay less than what amount?
The manufacturer of a laser printer reports that the average number of pages a cartridge prints before replacing it is 12,200. The distribution of printed pages per cartridge approximates the
In 2004 and 2005, the
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