ANSWERS. SUBMIT THIS ON WEDNESDAY. 1. Suppose that the likelihood that someone who logs into a particular site in a shopping mall on the web will purchase an item is .20. If the site has 10 people accessing it in the next minute‚ what is the probability that a) Exactly 2 individuals will purchase an item? b) At least 2 individuals will purchase an item? c) At most 2 individuals will purchase an item? 2. The quality Control Manager of ATV Cookies is inspecting a batch of chocolate-chip
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Midterm Review Name: _____________ 1. In an ungrouped frequency distribution of the average age of high school graduates‚ what would be the boundaries for the class of graduates who were reported to be 19 years old? 2. What is the midpoint of the class 4-8 ? 3. Greg wants to construct a frequency distribution for the religious affiliation of the employees at Tim’s Hardware Store. What type of distribution would be best? A) ungrouped B) grouped C) categorical D) cumulative 4. What is the upper
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Mathematics 1700’s was the times to develop the calculus and to expand the analysis made in 1600’s. In this century‚ there were so many enlargements of the design trigonometry‚ the analytic geometry‚ the number theory‚ the equation theory‚ the probability theory‚ the differential equation‚ and the analytic dynamics and also so many new creations of the insurance statistics‚ the function of higher degree‚ the partial differential equation‚ the descriptive geometry and the differential geometry. 1700’s
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new Household appliance to potential customers. She has found from her years of experience that after demonstration‚ the probability of purchase (long run average) is 0.30. To perform satisfactory on the job‚ the salesperson needs at least four orders this week. If she performs 15 demonstrations this week‚ what is the probability of her being satisfactory? What is the probability of between 4 and 8 (inclusive) orders? Solution p=0.30 q=0.70 n=15 k=4 [pic] Using Megastat we get
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History and Development of Statistics Simple forms of statistics have been used since the beginning of civilization‚ when pictorial representations or other symbols were used to record numbers of people‚ animals‚ and inanimate objects on skins‚ slabs‚ or sticks of wood and the walls of caves. Before 3000 BC theBabylonians used small clay tablets to record tabulations of agricultural yields and of commodities bartered or sold. The Egyptians analyzed the population and material wealth of their country
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take place in one or several locations. It is computed from the probability of the event becoming an issue and the impact it would have (See Risk = Probability X Impact). Various factors should be identified in order to analyze risk‚ including: * Event: What could happen? * Probability: How likely is it to happen? * Impact: How bad will it be if it happens? * Mitigation: How can you reduce the Probability (and by how much)? * Contingency: How can you reduce the
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are just some of the many ways that the NSPE maintains and promotes health and welfare. When looking at the engineers approach to risk they must find it or identify that risk first in the text risk is defined as “ a compound measure of the probability and magnitude of adverse effect”. So in an engineer’s eyes risk is looked at as the product of the likelihood of the magnitude of harm. In the text harm is defined as “an invasion of a person’s freedom or well being”. Also engineers have
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decision strategy remains the same as long as ‘Y’ is equal or more than 2 years. Probability of whether BCS component is fit or not Consider the probability that the BCS component will fit is ‘p’ and then the probability that BCS component will not fit is (1-p) As seen from calculation done from Memo 3‚ The optimum decision strategy remains the same as long as p < 51.7 %. Since its mention that the probability that BCS component fits is 35% to 50%‚ the optimum decision remains the same. Based
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$100‚000. If she opens a shop that proves to be unsuccessful she will lose $50‚000. On the other hand‚ If Carla chose not to open her own shop‚ she would have the option of investing in a dress shop being started by her best friend Amanda. The probabilities of Amanda’s shop being successful are the same as Carla’s. Carla would only stand to make $40‚000 if the shop was successful but if it was unsuccessful she would only lose $30‚000. Of course Carla can always do nothing. Draw a decision tree for
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http://www.socialresearchmethods.net/kb/sampaper.php Communication Theory of Secrecy Systems? By C. E. SHANNON 1 INTRODUCTION AND SUMMARY The problems of cryptography and secrecy systems furnish an interesting application of communication theory1. In this paper a theory of secrecy systems is developed. The approach is on a theoretical level and is intended to complement the treatment found in standard works on cryptography2. There‚ a detailed study is made of the many standard types of codes
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