Unformatted text preview: AMS310 PRETEST 1 practice questions for Test 1 I. SHORT ANSWER/MULTIPLE CHOICE QUESTIONS. 1. ALL QUIZ QUESTIONS Given f(x)= 0.1x for x=1,2,3, 4. 2 (a) What is the value of μ x ? (b) What is the value of σ x ? 3. Given X has Poisson probability distribution with λ =3.2, (a)what is the value of μ ? (b) What is the value of σ 2 ? 4. Evaluate ∑ = 10 2 )! 10 ( ! ! 10 ) 3 ( x x x x 0.3 x 0.7 10x . 5. P(A)= 0.4, P(AB)=0.4, so P(A B ) =___. 6. X has Poisson probability distribution with λ = 5. Use Table 2 to find P(X ≥ 4). 7. For a particular course, there are three grades, 0,1,2, 3 and 4, with 4=A etc. The cumulative distribution of the course grades is as follows: F(4)=1.0, F(3)=0.85, F(2)=0.65, F(1)=0.2 and F(0)=0.1. (a) What is the probability a student will receive a B? i.e., P(X=3)? (b) What is the probability that he will receive a score of C or less, i.e., P(X ≤ 2)? 8. Suppose X takes on values from 0 to 10 with f(0)=0.01 and f(10)= 0.05, then the standard deviation (a)must be less than 10 (b)can equal 10 (c) can equal 0...
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This homework help was uploaded on 01/31/2008 for the course AMS 310.01 taught by Professor Mendell during the Fall '03 term at SUNY Stony Brook.
 Fall '03
 Mendell

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