Q1:
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x
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1
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2
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3
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P(X=x)
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0.3
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0.5
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0.2
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What is E(X)?
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A. 1.2 B. 1.9 C. 0.5 D. 3.61 |
Answer 1:
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Q2:
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What is E(X2) from the distribution shown above?
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A. 4.6 B. 4.1 C.4 D. 16.81 |
Answer 2:
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Q3:
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In question 1, what is the value of VAR(X) |
A. 0.49 B. 4.1 C. 0.7 D. 1 |
Answer 3:
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Q4:
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z
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5
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6
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7
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8
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P(Z = z)
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s
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3s
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4s
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2s
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What is the value of E(Z)?
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A. 44.89 B. 2.6 C. 6.3 D. 6.7
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Answer 4:
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Q5:
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In question 4, what is VAR(Z)?
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A. 0.64 B. 0.7 C. 0.49 D. 0.81 |
Answer 5:
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