IFoA_CAA_M0 Exam Dumps : Module 0 - Entry Exam

For random variable X, use the following statistics to calculate its coefficient of skewness based on central moments.

E(X) = 3.940

E(X2) = 21.466

skew(X) = E[(X - μ)3] = 6.008

Three light bulbs are chosen at random from 15 bulbs of which 5 are known to be defective.

Calculate the probability that exactly one of the three is defective.

A)

B)

C)

D)

The stem and leaf chart below shows the ages of all the pensioners in a small village.

Identify which of the following is not true.