Explain what a critical value is, and explain how it is used to test a hypothesis.
Answer to relevant QuestionsExplain what a p-value is, and explain how it is used to test a hypothesis. Suppose a sample of 49 paired differences that have been randomly selected from a normally distributed population of paired differences yields a sample mean of d-bar = 5 and a sample standard deviation of sd = 7. a. ...Calculate a 95 percent confidence interval for p1 – p2. Interpret this interval. Can we be 95 percent confident that p1 – p2 is less than 0? That is, can we be 95 percent confident that p1 is less than p2? Explain. Intuitively explain why a value of s21/s22 that is substantially greater than 1 provides evidence that σ21 is not equal to σ22. a. Set up the null and alternative hypotheses needed to test whether the mean earnings per share for all “target firms” differs from the mean earnings per share for all “bidder firms.” Test these hypotheses at the ...
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