The manufacturer of a new line of ink-jet printers would, Ask an Expert

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The manufacturer of a new line of ink-jet printers would like to include as part of its advertising the number of pages a user can expect from a print cartridge. A sample of 10 cartridges revealed the following number of pages printed.

a. What is the point estimated of the population mean?

b. Develop a 95 percent confidence interval for the population mean.

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