The second normal population variance is the same but the unknown is the hypothesis test for the mean difference - online calculation tool


1,Enter sample values or sample size and calculated sample mean and sample standard deviation:
Enter each sample value Enter sample size, sample mean, 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):
H012, H11≠μ2
H01≤μ2, H112
H01≥μ2, H112
4,Click the "Start Inspection" button to start checking:

Suppose the two populations X and Y are independent of each other and obey the normal distribution. The mean and variance of X areμ112, The mean and variance of Y areμ222, that is X~N(μ112), Y~N(μ222),This page is σ1222which are same but unknown          mean differenceμ12make hypothesis test,the statistics are

,among them

,n1,X,S1 are the sample size, sample mean, and sample standard deviation of the population X. n2,Y,S2are the sample size, sample mean, and sample standard deviation of the overall Y.

 

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