proportion lies inside it. How would you explain 95% confidence to a layman? Suppose a professor of IIMA thinks that true proportion is 0.3. Are you ready to accept the professor’s perception based on your data at 99% confidence level? Solution – 1 Sample Size n = 100 (male smokers) p = 0.2 Sd (P) = √(pq / n) = .04 95% confidence interval of p = 0.2 ± 2 x 0.04 = 0.08 to 0.32 Explanation to a layman – 95% confidence means that if the sampling experiment i.e. selection
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and imposters of all time as he reflects back to his reign as a check fraud kingpin of 1960’s. Some may remember the movie Catch Me If You Can (Spielberg, 2002) that stars Leonardo DiCaprio and Tom Hanks portraying the true story behind the great confidence trickster that is Frank Abagnale, Jr. Mostly known for his various impersonations as a security guard, airline pilot, teaching assistant, physician, and attorney, he is also widely known for his ability to forge checks and after numerous escapes
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I. NORMALITY IN THE TESTPAPER II. EQUAL VARIANCES | Ho: | The two data have equal variances. | | | | | | | | | Ha: | The two data did not have equal variances. | | | | | | | | | | | | | | | | | | | | | Since the p value (0.006035) is lesser than alpha (0.05), then Ho is rejected. | | | | | | | | | | | | | | | | | | | Therefore, the two data did not have two equal variances. Meaning the two data comes from the different population. |
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The early 1990s was the beginning of Burnie Madoff’s grand scheme to wipeout billions of dollars from shareholders in the United States. This scheme of his is known as a Ponzi scheme and can also be known as the biggest fraudulent scheme in the United States. Burnie Madoff was born in 1938 and raised in Queens, New York. In the 1960s he developed his own business which quickly turned into a huge multi-million-dollar business called the Barnard L. Madoff Investment Securities, LLC. This business attracted
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reporter, BBC News 31 October 2012 Last updated at 00:20 Tesco says customers are taking greater pride in finding value UK consumers are feeling worse about the economy than they did last month, despite the end of recession, the latest consumer confidence survey from financial research firm GfK says. Retailers say this is causing a change in shoppers' spending habits. Last week, the boss of Debenhams said: "We believe customers are acclimatised to the new economic reality." The boss of Tesco
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be more centered, as mean, mode and median have similar values. 2. Develop a 95% confidence interval estimate of the mean assets, mean 7 day yield, and mean 30-day yield for the population of the money market funds. Provide a managerial interpretation of each interval estimate. Since the sample size is n=45 (>30), I can use a standard normal distribution to compute the interval estimation; 95% confidence level corresponds from the table to z=1.96. Since the standard deviation for the population
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MAT 300 M&Ms® Project Part 3 (21 pts) We will be constructing confidence intervals for the proportion of each color as well as the mean number of candies per bag. You will use the methods of 6.3 for the proportions and 6.1 for the mean. For the Bonus, you will use the sample size formula on page 338. You can use StatCrunch to assist with the calculations. A link for StatCrunch can be found under Tools for Success in Course Home. Here is also a link: http://statcrunch.pearsoncmg.com/statcrunch/larson_les4e/dataset/index
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Business Interests of Organized Crime Groups Mary Weyer August 20, 2011 Business Interests of Organized Crime Groups Organized crime groups are infecting the United States at an increasing rate. The temptation of making fast easy money to people in low income areas is too great to resist. Legitimate businesses are at risk of being victimized by organized crime theft and fraud activities New World Encyclopedia, 2008). No one is safe from organized crime
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Plunder of India India now is witnessing not mere corruption, but national plunder. --Brahma Challeny, The Hindu, Dec 6, 2010 ESTIMATE OF DEPOSITS IN SAFE HAVENS Top 5 in the world India - $1456 billion (1.4 Trillion dollars) Russia - $470 billion UK $390 billion Ukraine - $100 billion China $96 billion Note: While these numbers are not substantiated because of secrecy, it does reflect the magnitude. Conservative Estimate by Global Financial Integrity India’s standing per Transparency
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manufacturing process a random sample of 36 bolts manufactured has a mean of 3 inches w/ a standard deviation of .3 inches. What is the 99% confidence interval for the true mean length of the bolt? Confidence interval = [pic] = (2.87, 3.13) 2. When the population is normally distributed, population standard deviation σ is unknown, and the sample size is n = 15; the confidence interval for the population mean σ is based on the ________. Sample standard deviation, s. 3. Suppose that the percentage
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