mean and median. (3 marks) (ii) Determine the shape of the distribution based on the sample data? Explain your conclusion. (2 marks) Question 2 (a) A company produces a latest model of camera in large quantity. From past record, the defective rate is known to be 5%. Every day, the company will sample a batch of 20 cameras to check for manufacturing error. Assuming that the number of defective cameras follows a binomial distribution, calculate the i. ii. iii. probability of no camera is defective
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http://www.stat.tamu.edu/~west/ph/sampledist.html. Use a skewed distribution. Take 1000 samples of sizes 2, 10 and 100. Construct a mean for each sample and look at the distribution of the sample means (third row). Record the mean and SD in the population for the original random variable. Make a table and record the mean of the means, and the standard deviation of the mean for each sample size (2, 10 and 100). For a bell-shaped distribution we showed that the mean of the sample means is very similar
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standard deviation is given approximately as 932. The credit balance of the customers is more or less normally distributed with the peak of the bell shaped distribution lying in the range 3814. 2) The 2nd individual variable, I choose is the household size. Thus the number of people living in the households. SIZE Frequency Distribution | Size | Frequency | 1 | 5 | 2 | 15 | 3 | 8 | 4 | 9 | 5 | 5 | 6 | 5 | 7 | 3 | Interpretation The mean of the household size is known
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Introduction The article in which the hypothesis identification to be discussed is Enterprise systems for organizational decision support: An examination of objectives, characteristics, and benefits, by Mark Philip Sena. The hypothesis the author identified is concerned with processing knowledge that describes and enables the performance of each value activity in an organization's value chain (Sena, 2001). A. Background Enterprise computing systems are for organizations to understand each activity
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Eisner of Walt Disney, whom had a compensation that far exceeded the rest of the CEO’s. In addition, we created graphical summaries for both the average compensation and average return over five years to infer about the shape of the population distributions. The average compensation of the 800 CEO’s was skewed toward the right, due to the outlier of Walt Disney. The average return over five years of the 800 CEO’s was more normally distributed but still skewed a little to the right. Once we started
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The Smart Grid is a decentralized and interactive system. The interactive nature will involve two-way communication between the utility companies and the consumer. Through Advanced Metering Infrastructure (AMI) consumers are able to make better energy use decisions, defer usage to off-peak periods, and contribute power to peak period usage. Utilities will be better able to detect problems within their own systems and react quickly to replace power sources from multiple possible sources. The “Prices
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Course : CAES1906-G Name : Chan Ting Hong (Isaac) UID : 2010213837 Title : The Implementation of Goods and Services Tax : Destructive Effects Outweigh Benefits The issue of whether the government should implement Goods and Services Tax (GST) has been a hot debate in Hong Kong. The government stress that the tax will help broaden the tax base and secure the sustainability of tax revenue (Mak, 2006). They have also cited some examples from countries all over the world which have already imposed
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Multiple Choice Answer the next two questions based on the following: A water utility manager worried that demand has changed from its former 110 million gallons monthly average samples the most recent 60 months (millions of gallons/month). TEST OF MU = 110.00 VS MU NOT = 110.00 N MEAN STDEV SE MEAN T P VALUE DEMAND 60 117.70 14.42 1.86 4.14 0.0001 1. A test is conducted at the ( = 0.01 level to determine if average monthly demand now
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technology it is very important to use ordinal data for informative decision making. In our data sets there is a large majority of information that does not come in with a normal distribution. This is where it comes into play that a parametric test can aid due to the ability to examine information without normal distribution. One of the largest lessons in terms of these concepts is the data size that it takes to utilize these tests. Unfortunately as with any questionnaire my department usually gets
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University michael.posner@villanova.edu http://homepage.villanova.edu/michael.posner It’s MAGIC!!! • Spend 15 minutes entertaining your students while teaching or reviewing concepts including: – Probability and Independence – The Binomial distribution – The Normal approximation to the binomial – Hypothesis testing Semantics • Remove all ACEs from the deck • Place one red ACE and one black ACE face up • Ask each student, in order, to guess the color of a card which they cannot see • Place
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