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Hypothesis testing for single normal population variances

Category: Electronic
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1,Input each sample value or sample size plus the calculated sample standard deviation:
Enter each sample value Input sample size and sample standard deviation
Enter the sample values in the following multi-line input box separated by commas or blank characters
2,Select the significance level α：
0.1 0.05 0.025 0.02 0.01 0.005 0.001
3,Set the hypothesis option (original hypothesis is ): H0,alternative hypothesis is H1)：
H0:σ2=σ0 2, H1:σ2≠σ0 2
H0:σ2≤σ0 2, H1:σ2>σ0 2
H0:σ2≥σ0 2, H1:σ2<σ0 2
Enter σ0 in the input box. The value of variance σ0 2 can be followed by the letter q,σ0＝
4,Click the "Start Inspection" button to start checking:

Hypothesis testing of single normal total variance

It is known that the overall X obeys a normal distribution with a mean of μ, a standard deviation of σ, and a variance of σ2, ie X~ N(μ,σ2), This page deals with the case where the mean value is unknown to the other party's difference hypothesis test, and the test statistic is

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