Reference no: EM132649181
(1.) An event X has 3 outcomes +1, -1, 0, each occurring with an equal probability. What is the expected value E(X)?
a. 1
b. 0.5
c. 0.33
d. zero
(2.) An event X has 3 outcomes +1, -1, 0, each occurring with an equal probability. What is the expected value E(2X+3)?
a. 3
b. 1.5
c. 1
d. zero
(3.) An event X has 3 outcomes +1, -1, 0, each occurring with an equal probability. What is the value E(X2)?
a. 1
b. 0.66
c. 0.33
d. zero
(4.) An event X has 3 outcomes +1, -1, 0, each occurring with an equal probability. What is the value Var(X)?
a. 1
b. 0.66
c. 0.33
d. zero
(5.) A distribution that is the square of a normal distribution is:
a. chi-squared distribution
b. t-distribution
c. standard normal distribution
d. F-distribution with 'n' degrees of freedom
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