Unformatted text preview: associated tvalue? 2.269297. 5. When we use a testofsignificance approach to address Question 3, what is the associated pvalue? 0.08579 6. Can we be 95% confident that X is positively related to Y in the population? (NO or YES) YES. Why/why not? According to the textbook, we can use Test of Significance Approach to test a directional alternative hypothesis. In this case, we calculated t value is 2.269297, while critical value is tinv(.1,62) = 2.131847, t > tinv(.1,62). Therefore, it rejects H0, accepts HA and concludes with 95% confident that X is positively related to Y. 7. Suppose we have a new observation whose X value is 3494 and whose Y value is unknown. Based on the results from a linear regression that you conduct, between what two approximate values can we be 95% confident that the Y value of this observation lies? Lower bound: 5181.9903. Upper bound: 6685.1157 8. What is our best estimate of the population coefficient of determination? 0.453534...
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 Fall '11
 PhillipWirtz,RefikSoyer
 Statistics, Financial Modeling, Statistical hypothesis testing, lower bound, upper bound

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