Per-unit standards for direct labor
The per-unit standards for direct labor are 2 direct labor hours at $12 per hour. If in producing 1,200 units, the actual direct labor cost was $25,600 for 2,000 direct labor hours worked, the labor quantity variance is?
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The lifetimes of light bulbs of a particular type are normally distributed with a mean of 370 hours and a standard deviation of 5 hours. What percentage of bulbs has lifetimes that lie within 1 standard deviation of the mean on either side
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Calculate the change in enthalpy when 52.0 g of solid chromium at 25 degrees celcius and 1 atm pressure is oxidized. (delta h for Cr2O3(s) is -1135 kJ/mol.)
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Tony and Susan are starting a retail business selling formal wear for men and women. They estimate profits and losses for the next five years to be: ($20,000), ($10,000), ($5,000), $10,000, and $50,000 respectively.
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The annual precipitation amounts in a certain mountain range are normally distributed with a mean of 88 inches, and a standard deviation of 10 inches. What is the likelihood that the mean annual precipitation during 25 randomly picked years will
West Company sells its product for $60 per unit. During 2011, it produced 60,000 units and sold 50,000 units (there was no beginning inventory). Costs per unit are: direct materials $15.
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