Independent simple random samples are taken to test the difference between the means of two populations whose standard deviations are not known. The sample sizes are n₁ = 25 and n₂ = 35. The correct distribution to use is the A)Poisson distribution B)t distribution with 60 degrees of freedom C)t distribution with 59 degrees of freedom D)t distribution with 58 degrees of freedom

Question

Quizplus · Accepted Answer

When comparing means from two independent samples with unknown population standard deviations, the t distribution is used. The degrees of freedom are calculated using the formula for two-sample t-tests, which is n1 + n2 - 2 = 25 + 35 - 2 = 58.

Independent Simple Random Samples Are Taken to Test the Difference