INTRODUCTION Statistics and mathematics are everything to economics. infact statistics and Mathematics‚ the economic field wouldn’t even exist. Economist need statistics to represent data‚ to track and store information‚ to identify trends‚ to attribute value and mathematics to calculate those figures.The way to look at the relationship between statistics and economics is that economics is essentially the study of human decisions and trends‚ and how these have a financial impact. Economists
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they all propose that very little difference exists between delinquents and non-delinquents. Thus‚ they attribute the prevalence of criminal activity to the failure of primary social groups or institutions to provide reinforcement for non-delinquent roles. In essence‚ this theoretical framework suggests that criminal activity must be prevented by strong regulation‚ such as punishment. If some type of castigation is applied to illegal behavior on every occasion that it occurs‚ it is probable that a person
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Note: When you answer questions involving the test of hypotheses‚ use the four-step hypothesis process (see textbook pages 298-299). Also‚ see your textbook for the full question when necessary; the chapter 9 problems start on p. 303 Chapter 9‚ problems 4‚ 12‚ 14‚ 22 4. Explain why t distributions tend to be flatter and more spread out than the normal distribution. 12. Last fall‚ a sample of n = 36 freshmen was selected to participate in a new 4-hour training program designed to improve
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1. Question : Employees of a local university have been classified according to gender and job type. If an employee is selected at random what is the probability that the employee is male? Answer: .667 2. Question : Employees of a local university have been classified according to gender and job type. If an employee is selected at random what is the probability that the employee is female given that the employee is a salaried member of staff? Answer:
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e-Business Plan: Competitor Analysis Every business has competition and prospective business owners ignore competitors at their peril. Unless a business has an absolute monopoly on a life-essential product‚ there will be competitors offering alternative and substitute products and services. That level of competition is revealed in the competitor analysis section of your e-business plan. A competitor analysis is an important requirement in any business plan because it (a) reveals the firm’s competitive
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Question1: Frequency Distribution. Histograms‚ Cumulative Frequency and Ogives. 1) a) 799 b) 1000 c) 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)
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In the 21st Century the number of women enrolling in higher education institutions is surpassing the numbers of men enrolled. The graduation rates of women from high school and higher education are most often higher than for men. The number of women graduates from most professional occupations‚ including higher paying medicine‚ law and business‚ will exceed the number of men graduates in the near future. In numerous occupational areas with a majority of women graduates‚ salaries already surpass salaries
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Name: ____________ Date: ______________________________________________________________________________ □ EXERCISE 31 1. What are the two groups whose results are reflected by the t ratios in Tables 2 and 3? The two groups with results on the effects on cardiovascular risk factors and the programs effective on health behavior have paid t-ratios 2. Which t ratio in Table 2 represents the greatest relative or standardized difference between the pretest
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2-26. Disks of polycarbonate plastic from a supplier are analyzed for scratch and shock resistance. The results from 100 disks are summarized here: Scratch Resistance Shock Resistance High Low High 70 9 Low 16 5 Let A denote the event that a disk has high shock resistance‚ and let B denote the event that a disk has high scratch resistance. Determine the number of disks in A B‚ A‚ and A B. A B = 70‚ A= {9+5}= 14‚ A B ={70+16+9}= 95 2-86. Strands of copper wire from
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Descriptive and Inferential Statistics Paper PSY 315 Descriptive and Inferential Statistics Whether doing original research or conducting literature reviews‚ one must conclude what a powerful and versatile tool statistics are in the hands of researchers. From basic statistics such as data description‚ to using complex statistical methods to foresee future patterns or strengthen scientific claims about current climates‚ the role of statistics in research cannot be taken lightly and is essential
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