What is the number of degrees of freedom

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A. What is the number of degrees of freedom in a 36 single sample statistical t-test?

B. What is the number of degrees of freedom in a two-independent means statistical t-test with one sample size of 42 and the other sample size of 44 is?

C. In a before and after study involving 69 people in the before group and the same 69 people in the after group, the t-statistic was calculated. How many degrees of freedom are there?

D. Calculate the pooled estimate of variance for two populations where sample 1 sum of squares= 70 and sample 2 sum of squares =79 given n1=20 and n2=11. Round your answer to 2 decimal places.

Reference no: EM132263592

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