What annual interest rate, compounded annually, will cause an original deposit of $400 to grow to $725, after 7 years?
Answer(s): E
On the BAII Plus, press 400 PV, 725 +/- FV, 0 PMT, 7 N, then CPT I/Y. On the HP12C, press 400 PV, 725 CHS FV, 0 PMT, 7 n, then press i. Make sure the BAII Plus has the P/Y value set to 1.
The weight of an offensive lineman may be 210 pounds, 210.1 pounds, 210.13 pounds or 210.137 pounds depending on the accuracy of the scale. What is this an illustration of?
Answer(s): C
The weight changes are in a random fashion and without a separate interval. Therefore it is continuous and random.
Suppose the least squares regression equation is Y' = 1202 + 1,133X. When X=3, what does Y' equal?
Y' = 1202 + 1133(3) = 4601.
The following is a distribution of monthly commissions:Monthly Commissions Class Frequencies$600 - $7993$800 - $9997$1,000 - $1,19911$1,200 - $1,39922$1,400 - $1,59940$1,600 - $1,79924$1,800 - $1,9999$2,000 - $2,1994Referring to the table above, what is the relative frequency for those salespersons that earn between $1,600 and $1,799?
Answer(s): D
The sum of all the class frequencies is 120. The relative frequency for the $1600-$1799 class is therefore 24/120 = 20%
You are examining a group of 3 stocks within an industry. The industry average debt-to-equity ratio is expected to be 40%. For these stocks, the average debt-to-equity ratios have been 50%, 40%, and 30%. What is the mean absolute deviation of debt-to-equity ratios from the industry average?
Answer(s): B
The mean absolute deviation = the sum of (as i goes from 1 to n) of the absolute value of (X_i - Xbar), divided by n. Here, we have [|50% - 40%| + |40% - 40%| + |30% - 40%|]/3 = [10% + 0% + 10%] / 3 = 20%/3 = 6.67%.
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