# C calculate m 1 and m 2 2 points total 1 point per

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c) Calculate M 1 and M 2.
d) Calculate df 1 , df 2 , and df
e) Calculate s 2 1 and s 2 2. (estimated variance for population 1 and variance for population 2)
g) Use the pooled variance to calculate the variance for sampling distribution 1 and the variance for sampling distribution 2.
FallA2018 Hint: Sampling distribution derives from the original population and it consists of means of all possible samples drawn from the original population.
h) Calculate standard deviation of the comparison distribution. (2 points total: 1 for work and 1 for result)
i) Calculate the t statistic.
j) Considering the research question and the hypotheses, should the test be one-tailed or two-tailed? Why? (2 points total: 1 for each answer)
k) Determine the critical t value(s) for this hypothesis test based on the degree of freedom, from (d), and the preset alpha level. (1 point total)
l) Compare the calculated t statistic with the critical t value by stating which is more “extreme”, and then make a decision about the hypothesis test by stating clearly “reject” or “fail to reject” the null hypothesis.
m) Calculate the pooled standard deviation for the populations and then use it to calculate the standardized effect size of this test.
C#: 021920cb-e62c-4a71- a1ff-d2f326167a23
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