Question #16025

Assuming the population variances are known, the population variance of the difference between two sample means is
A) the sum of the two means.
B) the sum of the variances for each population.
C) the sum of the standard deviations for each population.
D) the sum of the sample sizes for each population.

Expert's answer

Answer:

C) the sum of the standard deviations for each population

Because

standard deviation is numerical value of variances and this index reveal

differences between each sample.

C) the sum of the standard deviations for each population

Because

standard deviation is numerical value of variances and this index reveal

differences between each sample.

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