When Testing for Differences of Means,you Can Base Statistical Inference

question 60

Multiple Choice

When testing for differences of means,you can base statistical inference on the

• A)Student t distribution in general
• B)normal distribution regardless of sample size
• C)Student t distribution if the underlying population distribution of Y is normal,the two groups have the same variances,and you use the pooled standard error formula
• D)Chi-squared distribution with ( + - 2)degrees of freedom

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