P Value Two Sample T Test Formula. Sp n1 1 s12 n2 1 s22 n1 n2 2 where s12 and s22 are the sample variances. Hypothesized difference between the two population means.
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S is the standard deviation of d. Hypothesized difference between the two population means. μ 1 μ 2 the two population means are equal h 1.
Sp n1 1 s12 n2 1 s22 n1 n2 2 where s12 and s22 are the sample variances.
T frac m s sqrt n where m is the mean differences. The formula for the test statistic is. Determine if the sample s statistics are different at a 99 5 confidence interval. The two samples have means of 10 and 12 standard deviations of 1 2 and 1 4 and sample sizes of 17 and 15.
