Find the minimum sample size needed to be 99% 99 % confident that the sample's variance...

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Find the minimum sample size needed to be 99% 99 % confident that the sample's variance...

Find the minimum sample size needed to be 99% 99 % confident that the sample's variance is within 50% 50 % of the population's variance. I know that the answer is 69, but how do you get to this answer?

math Statistics-And-Probability

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Answer 1

Answer #1

Here we need to use table to estimate the sample size. Following is the screen shot of table:

The required sample shown by the last line of the table. That is required sample size should be at least 68.

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Answer 2

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