The graph of a probability distribution is shown below. The graph is made up of a line segment and two curved paths. y 0.125 x 0 1 2 3 4 5 6 7 8 9 10 11 12 For each part below, suppose a real number is picked according to the above probability distribution. Do not round any of your answers. (a) Find the probability that the number picked is not between 4 and 7. (b) Find the probability that the number picked is between 4.3 and 5.7. (c) Find the probability that the number picked is 7.
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This can be done by finding the area under the curve between 4 and 7. The width is 3 (7-4) and the height is 0.125. Therefore, the probability is 3 * 0.125 = 0.375. Show more…
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