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# Confidence interval for the population standard deviation?

Tue 13 Nov, 2018 03:06 am
Use the given degree of confidence and sample data to find a confidence interval for the population standard deviation. Assume that the population has a normal distribution.

The hockey coach selected eight players at random and timed how long each player took to finish their exercises. The times (in minutes) were:
8, 15, 12, 10, 10, 7, 9, and 9.

Find a 90 percent confidence interval for the population standard deviation.
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engineer

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Tue 13 Nov, 2018 06:47 am
@homeworkprobz,
Use this standard deviation calculator. https://www.mathcelebrity.com/chiconf.php. You will need to compute the variance of your distribution.
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