The manufacturer of a toner cartridge claims the mean number of printouts

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The manufacturer of a toner cartridge claims the mean number of printouts is 100,000 for each cartridge. A consumer advocate is concerned that the actual mean number of printouts is greater. He selects a random sample of 14 such cartridges and obtains the following number of printouts. Are the consumer advocate’s concerns founded? Use the α = 0.05 level of significance.

 

9600 10300 9000 10750 9490 9080 9655

9520 10070 10100 10470 10005 9964 10330

 

 

 

 

    • 7 years ago
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