Basic concepts for each of the following answer the, Ask an Expert

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Basic concepts. For each of the following, answer the question and give a short explanation of your reasoning.

(a) A 95% confidence interval for the difference between two means is reported as (0.8, 2.3). What can you conclude about the results of a significance test of the null hypothesis that the population means are equal versus the two-sided alternative?

(b) Will larger samples generally give a larger or a smaller margin of error for the difference between two sample means?

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Statistics and Probability, Statistics

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