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A manufacturing company produces steel housings for electrical equipment. The main component part of the housing is a steel trough that is made out of a steel coil. It is produced using a progressive punch press with a wipe-down operation that puts two forms in the flat steel to make the trough. The distance from one side of the form to the other is critical because of weatherproofing in outdoor applications. The company requires that the width of the trough be between and . The widths of the troughs, in inches, for a sample of are:
At the level of significance, is there evidence that the mean width of the troughs is different from ?
Suppose the 2014 income statement for McDonald’s Corporation shows cost of goods sold $5,178.0 million and operating expenses (including depreciation expense of$1,216.2 million) $10,725.7 million. The comparative balance sheet for the year shows that inventory decreased$5.3 million, prepaid expenses increased $42.2 million, accounts payable (merchandise suppliers) increased$15.6 million, and accrued expenses payable increased $199.8 million.
Using the direct method, compute cash payments for operating expenses.
The Barron’s Big Money Poll asked 131 investment managers across the United States about their short-term investment outlook (Barron’s, October 28, 2002). Their responses showed 4% were very bullish, 39% were bullish, 29% were neutral, 21% were bearish, and 7% were very bearish. Let x be the random variable reflecting the level of optimism about the market. Set x = 5 for very bullish down through x = 1 for very bearish.
Comment on what your results imply about the level of optimism and its variability.