We Can Infer a Statistically Significant Difference Between Two Population

question 1

Multiple Choice

We can infer a statistically significant difference between two population means when

• A) our estimates of the two means are different.
• B) the variances of the two means do not overlap.
• C) the standard deviations of the two means do not overlap.
• D) the 95% confidence intervals for the two means do not overlap.
• E) the 95% confidence intervals for the two means are of different widths.

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