Asked by Portia

The lifetimes of Triple X TV Tubes are approximately normally distributed with mean 13.2 years and standard deviation 3.5 years. Consider the distribution of sample means for all samples of 100 Triple X TV tubes.

Part A

What is the standard error, to two decimal places, of the sample means? Give your answer to two decimal places in the form x.xx

Answers

Answered by charlie
0.33
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