In order to determine the average weight of carry-on luggage by passengers in airplanes, a sample of 16 pieces of carry-on luggage was weighed. The average weight was 20 pounds. Assume that we know the standard deviation of the population to be 8 pounds. Also, assume the population is normally distributed
a. Determine a 97% confidence interval estimate for the population mean weight of the carry-on luggage.
b. Determine a 95% confidence interval estimate for the population mean weight of the carry-on luggage.
a. 15.66 to 24.34 pounds
b. 16.08 to 23.92 pounds
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Gilbert Company purchased a mineral deposit for $800,000. It expects this property to produce 1,200,000 tons of ore and to have a salvage value of $50,000. In the current year, the company mined and sold 90,000 tons of ore. Its depletion expense for the current period equals:
A) $ 15,000. B) $ 60,000. C) $150,000. D) $ 56,250. E) $139,500.
Assume a = 0.25, b = 0.13, r = 0.06, and ? = 0.25. Using the CIR model, calculate the gamma of a zero coupon bond maturing in 3 years
A) 2.14 B) 2.34 C) 2.54 D) 2.74