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The new management at a bakery claims that workers are now more productive than they were under old management, which is why wages have "generally increased. "Let Wib be Worker i's wage under the old management and let Wii be Worker i's wage after the change. The difference is Assume that the Di are a random sample from a Normal distribution. (i) Using the following data on 15 workers, construct an exact 95% confidence interval for _.
(ii) Formally state the null hypothesis that there has been no change in average wages. In particular, what is E(Di) under H0? If you are hired to examine the validity of the new management's claim, what is the relevant alternative hypothesis in terms of ?
(iii) Test the null hypothesis from part (ii) against the stated alternative at the 5% and 1% levels.
(iv) Obtain the p-value for the test in part (iii).
solve the following linear programming model graphically. in addition write the problem in standard form and do a
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Assume that a grower of flower bulbs sells its annual output of bulbs to an Internet retailer for $80,000. The retailer, in turn, brings in $125,000 from selling the bulbs directly to final customers. What amount would these two transactions added..
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Compare the performance of the two bonds in the two scenarios, one involving an increase in rates, the other a decrease. Based on the comparative investment performance, explain the attraction of convexity.
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