Suppose you are to test the mean difference between two independent samples in your data. The (unbiased) standard deviation in the first sample is 15, and it is 12 in the second sample. The sample sizes are 50 for the first and 100 for the second. Calculate the numerator of the pooled variance (numerator only, not the pooled variance itself).

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Suppose you are to test the mean difference between two independent samples in
your data. The (unbiased) standard deviation in the first sample is 15, and it is 12 in
the second sample. The sample sizes are 50 for the first and 100 for the second.
Calculate the numerator of the pooled variance (numerator only, not the pooled
variance itself).
O
1923
25281
25650
170.82
Transcribed Image Text:Suppose you are to test the mean difference between two independent samples in your data. The (unbiased) standard deviation in the first sample is 15, and it is 12 in the second sample. The sample sizes are 50 for the first and 100 for the second. Calculate the numerator of the pooled variance (numerator only, not the pooled variance itself). O 1923 25281 25650 170.82
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