STATISTICS TEST Length: 1090 words (3.1 double-spaced pages) Rating: Red (FREE) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Statistics are necessary for scientific research because they allow the researchers to analyze empirical data needed to interpret the findings and draw conclusions based on the results of the research. According to Portney and Watkins (2009), all studies require a description of subjects and responses that are obtained through measuring central
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per 6 minutes. (Each vehicle on average has four customers, and they can all sit on one table.) To avoid incurring a loss on a particular day, there should be at least 6 vehicles arriving during the peak lunch hour period. (a) What is the probability of the restaurant incurring a loss on any given day? (3 marks) X = number of vehicles arriving during peak lunch hour X ~Poisson (λ = 10) P [incurring a loss] = P [X < 6] = 0.0671 x | Prob | 0 | 4.53999E-05 | 1 | 0.000453999
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(the population about which we want to draw inference) and the sampled population (the population from which we have actually taken a sample) are the same. In practice these may not be the same. Sampling distribution of a statistic Knowledge of probability distribution allows us to calculate the
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Venetia Carter Professor Donald Ray West Quantitative Methods MAT 540 January 18, 2011 1. The number of days needed to repair the copier when it is out of service , according to the discrete distribution shown : Repair time (days) | Probability | Contribution to average repair time | 1 | 0.20 | 0.20 | 2 | 0.45 | 0.90 | 3 | 0.25 | 0.75 | 4 | 0.10 | 0.40 | Total (average days) | 1.00 | 2.25 | 2. Number of weeks between breakdowns simplified # of weeks | Cumulative chance
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a) What is the probability that a worker is a woman? b) If a managerial person is selected, what is the probability that the person is a woman? c) A special bonus is given to a person in the technical area – what is the probability that it will go to an woman given that the worker is in the technical area? Is this discrimination against male technical workers? What factors might enter into the awarding of bonus other than random selection? d) What is the probability that a professional
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1. In the following examples, identify the response variable and the explanatory variables. a. Attitude toward gun control (favor, oppose), Gender (female, male), Mother’s education (high school, college). EXPLANATORY: Gender (female, male), Mother’s education (high school, college); RESPONSE: Attitude toward gun control (favor, oppose). b. Heart disease (yes, no), Blood pressure, Cholesterol level. EXPLANATORY: Blood pressure, Cholesterol level; RESPONSE: Heart disease (yes, no)
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number by first multiplying the total additional cost (184k) by the percentage amount (0%). In other words, because of there is no probability that nothing will occur and is certain to happen, this keeps the additional cost equal to the EMV. Option Two This option gives an expected monetary value of$ 56,400. We derive to this answer by calculating the probability (20%) and multiplying it by its total additional cost of $282K. This mean that the voyage has a 20% chance of not having water exceed
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find the probability of getting someone who is a girl or boy. (b) (2.5 points) Given that we select a random person who survived, what is the probability of getting boy? (c) (2 points) Suppose that boys who survived, went for cruise at the rate of six per year. Using the Poisson distribution, what would be the mean and standard deviation of the number of boys who survived and went for a cruise in six years? 2. It is found that Viagra users experience headaches with probability 0.15. Suppose
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time and so there is no balking and reneging. 3. Arrival of customers is independent of the preceding arrivals, but the average no. of arrivals does not change over time (arrival rate). 4. Arrival of customers is described by Poisson probability distribution and come from infinite or very large population. 5. Service times
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Fin 700 Tianqi Sun Dr. Al. Barzykowsi Dec. 19, 2015 Short Paper - Statistical Methods This paper talks about statistical methods. Statistical data indicates that the agency 's approach is characterized by its population by inference Presented from a representative sample of the population views. As scientists rarely observed throughout Crowd, sampling and statistical inference is essential. This paper discusses some of the general principles Visualization of planning experiments and data.
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