Exam 3 Study Guide Math 219 1. The probability that a randomly selected patient who visits the emergency room will die within 1 year of the visit is 0.05. (binomial probability distribution) a) What is the probability that exactly 1 of 10 randomly selected visitors to the ER will die within 1 year? b) What is the probability that fewer than 2 of 25 randomly selected visitors to the ER will die within 1 year? c) What is the probability that at least 2 of 25 randomly selected
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Selected Answer: False Correct Answer: False Question 5 If events A and B are independent‚ then P(A|B) = P(B|A). Answer Selected Answer: False Correct Answer: False Question 6 A binomial probability distribution indicates the probability of r successes in n trials. Answer Selected Answer: True Correct Answer: True Question 7 The events in an experiment are mutually exclusive if only one can occur at a time
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Variances Variances can be either: * Positive/favourable (better than expected) or * Adverse/unfavourable ( worse than expected) A favourable variance might mean that: * Costs were lower than expected in the budget‚ or * Revenue/profits were higher than expected By contrast‚ an adverse variance might arise because: * Costs were higher than expected * Revenue/profits were lower than expected What causes budget variance? There are four key reasons and it is important that
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A New Method for Placement of DG Units in Distribution Networks H.Hedayati‚ S.A.Nabaviniaki‚ Senior Member‚ IEEE‚ and A.Akbarimajd Abstract-- In this paper a new method for placement of DG (distributed generation) units in distribution networks has been presented. This method is based on two factors: analysis of power flow continuation and determination of the most sensitive voltage buses to collapse voltage. This method has been executed on a typical 34-Bus test system. Efficiency of proposed
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Wal-Marts distribution system is the most advanced in the world. For most products they use the pull system‚ which simply means that inventory is not moved until a customer buys something and then the system orders a replacement for that item. 85% of the items are picked up at the suppliers warehouse by a Wal-Mart truck and brought to the distribution center. A small amount of products are brought to the store‚ I think by P&G. Wal-Mart uses cross docking a system they perfected to unload a truck
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the random variable X be the number of people who buy a plain bagel. (a) Find the probability distribution for X. (b) Suppose at least 3 people buy a plain bagel. What is the probability that exactly 4 people buy a plain bagel? 3. The probability distribution for a discrete random variable X is given by the formula p(r) = for r = 1‚ 2‚ . . . ‚ 6. (a) Verify that this is a valid probability distribution. (b) Find P (X = 4). (c) Find P (X > 2). (d) Find the probability that X takes on the value 3 or
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08 1.66 (34.53‚ 40.16) C20 30 39.46 10.65 1.94 (36.16‚ 42.77) C21 30 34.71 9.21 1.68 (31.85‚ 37.57) d) 1 Sample T-Test for Variable C2 n= 30 df= 29 = 36.91 SE= 1.92 α= 1-CC = 1.0.90 = 0.1 e) Apply binomial theorem for x= 16‚ 17‚18‚19‚20 p=0.9 q=0.1 n=20 16 Interval 17 Interval 18 Interval 19 Interval 20 Interval f) Mean from Part A = 37.9263 Variable N Mean StDev SE Mean 90% CI C2 30 36
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Exercise 5-57 Assume there are 23 homes in the Quail Creek area and 9 of them have a security system. Four homes are selected at random: | (a) | What is the probability all four of the selected homes have a security system? (Round your answer to 4 decimal places.) | Probability | | (b) | What is the probability none of the four selected homes have a security system? (Round your answer to 4 decimal places.) | Probability | | (c) | What is the probability at least one
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Power Distribution Reforms in India – A journey from Monopoly towards Competition. Case Objective: Power a basic human need is the critical infrastructure on which modern economic activity is fully dependent. Only 55% households in India have access to Electricity. Most of those who have access do not get uninterrupted reliable supply. In this era of globalization‚ it is essential that electricity of good qualities is provided at reasonable rates for economic activity so that competitiveness increases
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option. Use the risk-neutral valuation method to price this call option. Work recursively back through the Binomial tree‚ calculating the call option price at each node. Check that the option price at each node matches that calculated in part a. Again use the risk-neutral method to value this call option‚ but this time do not work back recursively. Rather‚ focus on the terminal distribution of stock price (and the number of paths which lead to each terminal stock price). Assume a European-style put
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