Question

Consider the test of hypothesis for the equality of two population means. The sample data from the first population is: n = 10, x-bar = 52.4, s = 5. The sample data from the second population is: n = 8, x-bar = 48.2, s = 6. Both variables are normally distributed and the population variances are assumed to be equal. The pooled estimate of the common population standard deviation is:

Question 15 options:

6.71


2.59


5.46


1.23
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