R 1) Consider three dice with the scores given in brackets: A (1-2-3-4-5-6), B (1-1-2-3 - 6-6) and C (1-1-2-5-6-6). Obtain the mass functions of random variables that represent: a) the sum of points obtained b) the lowest value obtained by throwing three dice.
2) Knowing that the duration of certain electronic components is a random variable exponential average of 7 months, calls for: a) The probability that an item will last between 5 and 12 months. b) Probability that an element that has lasted over 10 months longer than 25. c) Ditto if you have lasted over 20 months to last more than 35. d) Sketch the density function and distribution function of the random variable as complete as possible (colors, appropriate signs, etc.).
0 comments:
Post a Comment