ST 350 Midterm: ST 350 NCSU Exam2 Fall17 MW TTH
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In a population of students the number of calculators owned is a random variable (1) p p . Find the expected value and standard deviation of this probability distribution. with (0) . 2: an oil firm is to drill three wells, with each well having probability 0. 2 of successfully producing oil. It costs the firm ,000 to drill each well. A successful well will bring in oil worth ,000. Let the random variable x be the oil firm"s. 3: let the random variable denote the displacement in cubic inches. ) of the engine in a particular model of automobile. The size of the engine (that is, the cubic inch displacement) varies depending on the options chosen by the buyer of the automobile. 1 in denotes the engine diplacement in cubic centimeters in and. 7: let be the number of accidents per week at a hazardous intersection; varies with mean 2. 2 and standard deviation 1. 4.
