Question

Asked Dec 18, 2019

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A random sample of 6 light bulbs had a mean life of 548 hours and a standard deviation of 29 hours. Construct a 90% confidence interval for the mean of light bulbs of this type.

- 532 to 564
- 524 to 572
- 529 to 567
- correct answer is not given

Step 1

The degrees of freedom is o...

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