QUESTION: 989

If 68% of the observations of a bell-shaped, symmetrical frequency distribution fall between -20 and + 60, the mean and the standard deviation of the distribution are:

40, 20
40, 40
20, 20
20, 40

Answer(s): D

Explanation:

Since the distribution is symmetrical about the mean, the mean is equal to (-20 + 60)/2 = 20. According to the empirical/Normal rule, for a bell-shaped, symmetrical frequency distribution, 68% of the observations lie within one standard deviation of the mean. Therefore, the standard deviation equals 60-20 = 40.

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QUESTION: 990

What is the range of values for a coefficient of correlation?

-1.0 to +1.0 inclusive
Unlimited range
-3 to +3 inclusive
None of these answers
0 to +1.0

Answer(s): A

Explanation:

The closer the value to 1 or -1, the stronger the correlation. The sign +/- just shows the direction, not the strength.

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QUESTION: 991

What is your monthly payment, beginning next month, on a $19,000 loan, if you pay it off over 48 months and the interest rate is 5.9% per year, compounded monthly?

$398.68
$1,411.86
$448.60
$397.26
$445.34

Answer(s): E

Explanation:

On the BAII Plus, press 48 N, 5.9 divide 12 = I/Y, 19000 PV, 0 FV, CPT PMT. On the HP12c, press 48 n, 5.9 ENTER 12 divide i, 19000 PV, 0 FV, PMT. 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.

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QUESTION: 992

A selected group of employees of Unique Buying Services is to be surveyed with respect to a new pension plan. In depth interviews are to be conducted with each employee selected in the sample. The employees are classified as follows.

Classification Event Number of Employees
Supervisors A 120
Maintenance B 50
Production C 1,460
Management D 302
Secretarial E 68

What is the probability that the first person selected is either in maintenance OR in secretarial?

0.001
0.015
0.200
None of these answers
0.059

Answer(s): E

Explanation:

There are 2000 employees of which 50 are from maintenance and 68 in secretarial. Therefore (50 + 68)/2000 = 0.059.

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Free CFA-Level-I Exam Braindumps (page: 248)

QUESTION: 989

Explanation:

QUESTION: 990

Explanation:

QUESTION: 991

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QUESTION: 992

Explanation: