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In testing the difference between the means of two normally distributed populations, if μ1 = μ2 =...

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Basic Math

In testing the difference between the means of two normallydistributed populations, if μ1 =μ2 = 50, n1 = 9, andn2 = 13, the degrees of freedom for thet statistic equals ___________.

19,20,21,22

When comparing two independent population means by using samplesselected from two independent, normally distributed populationswith equal variances, the correct test statistic to use is______.

z,F,t, t^2

When testing a hypothesis about the mean of a population ofpaired differences in which two different observations are taken onthe same units, the correct test statistic to use is _________.

z, None of the other choices is correct, t,F, chi-square

In testing the difference between the means of two normallydistributed populations using independent random samples, thecorrect test statistic to use is the

F statistic, chi-square statistic, None of the otherchoices is correct, t statistic, z statistic.

In general, the shape of the F distribution is_________.

skewed right, skewed left, binomial, normal

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