When Conducting a T Test for Independent Means,once the Variances

question 23

Multiple Choice

When conducting a t test for independent means,once the variances are known for each of the distributions of means,the variances can be added together to give the

• A)pooled estimate of the population variance.
• B)variance of the distribution of differences between means.
• C)t score.
• D)power of the study.

Understand and compute Z scores for data observations.

Determine sample size from given variance and total sum of squares.

Compute grade point averages (GPAs) using a 4-point grading system.

Determine sample size from given standard deviation and total sum of squares.

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