900+9992 = 949.5 d) Lower Class Boundary=1100-0.5 =1099.5 Upper Class Boundary=1199.5+0.5=1199.5 e) 100 f) 76 g) 62400×100=15.5 h) 600-699‚ the fourth class has the largest frequency of 76. i)14+46+58400 ×100=29.5% j) 48+22+6400 ×100=19.0% k) 4002=200 200 lie in the fifth class interval 700-799 ∴The median lies in this interval. =l+n2-cff×h =700+200-19468×99 =708.735 l) L.Limit | U.Limit | Frequency | midpoint | fx | 300 | 399 | 14 | 349.5 | 4893 | 400 | 499 | 46 | 449.5 | 20677
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Chapter 1 The nature of Probability and Statistics Basics of Statistics: 1. Statistics: It is the science of conducting studies to collect‚ organize‚ summarize‚ analyze and draw conclusions from data. In another words‚ it is a scientific field of study that provides approaches to making inferences about populations based on the examinations of smaller sets of data. a. Descriptive statistics: It consists of the collection‚ organization‚ summarization and presentation of data. Examples: sample mean
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Prepare a managerial report for the dean of the college that summarizes your assessment of the nature of cheating by business students at Bayview University. Be sure to include the following questions. 1. Develop 95% confidence intervals for the proportion of all students‚ the proportion of male students‚ and the proportion of female students who were involved in some type of cheating. 2. Conduct a hypothesis test to determine if the proportion of business students at Bayview University who were
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Statistics BUS308: Statistics for Mangers Instructor: Learning Statistics Statistical data has become an item that we see all around us in our everyday lives‚ from television programs talking about selling products or politicians using data to show how they perform in their jobs‚ in hopes to be reelected. Throughout the course in Statistics for Managers‚ I have learned many things on how the use of statistical information can help me to understand these items and also to help me to perform my
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boxes or greater than 950 boxes? b. The store orders cereal from a distributor weekly. How many boxes should the store order for a week to have only a 2.5 percent chance of running short of this brand of cereal durin" the week? 5.35 Recall from Exercise 5.32 that yearly returns on common stocks are normally distributed with a mean of 12.4 percent and a standard deviation of 20.6 percent. a. What percentage of yearly returns are at or below the 10th percentile of the distribution of yearly returns
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A research on road safety statistics in Australia and Vietnam by Duong Thuy Duong‚ class AE8 3.1-Smartcom I- Introduction This research is about road safety statistics in Australia and Vietnam included the accident rates‚ the road traffic death rates and the majority’s age of death and injuries. In addition‚ we will compare the statistics in Australia to one in Vietnam and explain the results of this comparison. The purpose of the research is to make some suggestions to improve the road safety
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or print) used to promote a product. Answer – Qualitative as it is descriptive or categorical. 1.17 Classify each of the following qualitative variables as ordinal or nominative. Explain your answers. Qualitative Variable Categories Statistics course letter grade A B C D F Answer – Ordinal because there is a meaningful order of the grade categories i.e. (A is good and F is bad) Door choice on Let’s Make a Deal Door #1 Door#2 Answer – Nominative because there is no meaningful ordering
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Luis Canostriuino Pulido from Columbia is a nursing student attending Inlet Grove Community High school. But unlike most of us who wake up at 5:30 or 6 and take a bus or car to school‚ he wakes up at 4am catches a bus‚ train then another bus to get to school and then does the same to get home every day. Motivated by his mother‚ the 14-year-old left his home country and all of his family with the exception of his mom‚ in search of a better Future. “It’s been a little bit weird and scary because
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Wildlife & Conservation Statistics Extinction of Species • Every 20 minutes‚ the world adds another 3‚500 human lives but loses one or more entire species of animal or plant life - at least 27‚000 species per year. (Source: PBS) • At the present rates of extinction‚ as many as 20% of the world’s 7-15 million species could be gone in the next 30 years. This rate of extinction has been unprecedented since the disappearance of dinosaurs 65 million years ago (Source: WWF). Habitat Destruction (Source:
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high demand of work and opportunity to grow. With the proper hiring and structure Amed Lopez Construction will have the opportunity to achieve market dominance in the construction industry and achieve future profitability. Value Statement The research is worth doing because it will give a small business an opportunity to grow successfully and effectively. At the same rate it will give the current key employees an opportunity for growth. Business Problem Proposal 3 Background The current
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