MATH10120 Midterm: Math10120F14 Spring2006 EX3s06
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1 the probability distribution for a random variable x is given below. What is the variance of x (denoted 2 or var(x))? k pr(x = k) Let z be a random variable with a standard normal distribution. What is p r(z 1)? (use the attached tables) (a) 3 which of the pairs of values for x and y given below is in the feasible set for the set of inequalities: x + 2y 7. 4 which of the following give the co-ordinates of the point of intersection of the two lines: 8x + 4y = 4 (a) x = 3, y = 13 (b) x = 1. 9 (c) x = 1, y = 3 (d) x = 2, y = 8 (e) x = 2, y = 10. A student spending spring break in ireland wants to visit galway and cork. The student has at most 7 days available and at most 500 euros to spend.
