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Chapter 7 Assignment (1)

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Q 1. Define H0 and H1. (2.5%)2. Define the sampling distribution of differences between means.3. Discuss the characteristics of the sampling distribution of differences between means. 4. In the sampling distribution of differences between means, what do the areas beyond the z-score represent. (5%)5. Discuss levels of significance in hypothesis testing.

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1.The hypothesis actually to be tested is usually given the symbol H_0, and is commonly referred to as the null hypothesis. The other hypothesis, which is assumed to be true when the null hypothesis is false, is referred to as the alternative hypothesis, and is often symbolized by H_1. 2.The Sampling Distribution of the Difference between Two Means shows the distribution of means of two samples drawn from the two independent populations, such that the difference between the population means can possibly be evaluated by the difference between the sample means.