Confidence Intervals Can Be Used to Determine Whether Different Sample

question 2

Multiple Choice

Confidence intervals can be used to determine whether different sample proportions reflect a "real" difference in the population. The basic approach is to

• A)find the margin of error for each proportion and see if the difference is less than zero.
• B)find the difference in the proportions and see if the difference is less than zero.
• C)find a confidence interval at the significance level desired for the difference in proportions.
• D)find the difference in the proportions and see if the difference is greater than zero.

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