A two-tailed test of population mean is performed at 0.20 level of significance with unknown σ....
A two-tailed test of population mean is performed at 0.20 level of significance with unknown σ. Sample size is 20. Find the critical value(s).
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-0.842 |
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1.328 and -1.328 |
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-1.282 and 1.282 |
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-0.861 |
Homework Answers
Here as we have two tailed test so, n=20
Critical values are
=> t 0. 10,19 and t0. 90,19
=> 1.328,-1.328
Option B is correct
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