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{"ops":[{"attributes":{"bold":true},"insert":"Calculation on Population Mean: "},{"attributes":{"italic":true,"bold":true},"insert":"\u03c3 "},{"attributes":{"bold":true},"insert":"Known\/unknown"},{"insert":"\n1.\u00a0\u00a0\u00a0\u00a0\u00a0Wall Street securities firms paid out record year-end bonuses of $125,500 per employee for 2005 ("},{"attributes":{"italic":true},"insert":"Fortune, "},{"insert":"February 6, 2006). Suppose we would like to take a sample of employees at the Jones & Ryan securities firm to see whether the mean year-end bonus is different from the reported mean of $125,500 for the population.\n\u00a0\nA.\u00a0\u00a0\u00a0State the null and alternative hypotheses you would use to test whether the year-end bonuses paid by Jones & Ryan were different from the population mean.\nB.\u00a0\u00a0\u00a0\u00a0Suppose a sample of 40 Jones & Ryan employees showed a sample mean year-end bonus of $118,000. Assume a population standard deviation of "},{"attributes":{"italic":true,"bold":true},"insert":"\u03c3"},{"insert":" =$30,000 and compute the "},{"attributes":{"italic":true},"insert":"p"},{"insert":"-value.\nC.\u00a0\u00a0\u00a0\u00a0\u00a0With "},{"attributes":{"italic":true},"insert":"\u03b1 "},{"insert":"= .05 as the level of significance, what is your conclusion?\nD.\u00a0\u00a0\u00a0Repeat the preceding hypothesis test using the critical value approach.\n\u00a0\n"}]}
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