Free CFA-Level-I Exam Braindumps (page: 125)

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In hypotheses testing, what is the level of significance?

  1. Symbolized by the Greek letter "alpha"
  2. All of these answers are true
  3. Selected before a decision rule can be formulated
  4. Value between 0 and 1
  5. Risk of rejecting the null hypothesis when it is true

Answer(s): B

Explanation:

All the above a correct descriptions of the level of significance.



A random variable can take on four values: 12, 36, 78, 111, each with probability 0.25. The standard deviation of the random variable equals ________.

  1. 152.4
  2. 49.3
  3. 1,451
  4. 38.1

Answer(s): D

Explanation:

Since all the observations occur with equal probability, the mean of the observations is (12 + 36 + 78 + 111) *0.25 = 59.25. The variance is then given by 0.25*( [12-59.25]^2 + [36-59.25]^2 + [78-59.25]^2 + [111-59.25]^2) = 1451. The standard deviation is equal to sqrt(1451) = 38.1.



If you deposit $10,000 into an account paying 6% per year, compounded semiannually, how much do you have in the account in 8 years?

  1. $15,938.48
  2. $16,047.06
  3. $12,667.70
  4. $14,800.00
  5. $25,403.52

Answer(s): B

Explanation:

On the BAII Plus, press 16 N, 6 divide 2 = I/Y, 10000 PV, 0 PMT, CPT FV. On the HP12C, press 16 n, 6 ENTER 2 divide i, 10000 PV, 0 PMT, FV. Note that the answer will be displayed as a negative number. Make sure the BAII Plus has the value of P/Y set to 1.



A cumulative frequency distribution on days absent during a calendar year by employees of a manufacturing company is shown below.
Days Absent Cumulative Number of Employees
0 - 260
3 - 531
6 - 814
9 - 116
12 - 142
How many employees were absent more than five days?

  1. 14
  2. 8
  3. None of these answers
  4. 22
  5. 31

Answer(s): A

Explanation:

The cumulative number for class 6-8 will give us the number of people absent more than five days; 14.






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