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V125BC [204]
3 years ago
14

The batteries produced in a manufacturing plant have a mean time to failure of 30 months, with a standard deviation of 2 months.

I select a simple random sample of 400 batteries produced in the manufacturing plant. I test each and record how long it takes for each battery to fail. I then compute that the average failure time of the 400 batteries is 29.9 months with a standard deviation of 2.15 months. In this scenario, the value 30 is:
Mathematics
1 answer:
Oduvanchick [21]3 years ago
8 0

Answer:

The population mean.

Step-by-step explanation:

29.9 is the <u>sample</u> mean.

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TRUE

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