1) Unstructured interviews are best used for D. asking individualized questions with no specific order 2) A recent study of breast cancer revealed that 13% of women in the sample used antibiotics more than 500 days in their lifetime. Further‚ 79% of these women developed breast cancer. According to the American Cancer Society‚ one in 12 women will develop breast cancer at some time in their lives. Of the numbers mentioned‚ which are parameters? D. 79% and one in 12 3) Basic business research
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interpret the standard deviation‚ to describe distributions of scores‚ and making statements of probability. In relation to standard scores‚ we can determine the percent of the total area under the normal curve associated with any given sigma distance from the mean and the probability of obtaining any raw score in a distribution. 3) What is the standard error of the mean and why is it important? If you take many random samples from a population‚ the standard error of the mean is the standard deviation
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same set‚ because the audit team could request a comprehensive documents package from the client. The sample size table in Appendix A indicates that a sample size of 58 is acceptable for the first control‚ but the higher estimated population deviation rate for the second control suggests that a larger sample size of 77 is necessary in order to gather sufficient evidence and obtain reasonable assurance over the control. The larger of the possible sample sizes should be selected for testing‚ because
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Arturo Delgado Jr. April 23‚ 2013 ESSM 301-‐507 RAINFALL‚ INFILTRATION‚ AND INFLUENCING FACTORS Introduction In this study‚ a rainfall simulation was conducted in order to measure infiltration rates at the Low Stony Hill site in Gatesville‚ Texas. Rainfall simulations are important contributors to understanding infiltration and factors‚ which influence infiltration rate‚ such as bulk density‚ plant biomass and percent cover‚ and topography. The objective
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Please read Article 1 and then answer the questions 1 - 4 45‚000 U.S. deaths to lack of insurance By Susan Heavey Susan Heavey – Fri Sep 18‚ 8:22 am ET. WASHINGTON (Reuters) – Nearly 45‚000 people die in the United States each year -- one every 12 minutes -- in large part because they lack health insurance and cannot get good care‚ Harvard Medical School researchers found in an analysis released on Thursday. "We’re losing more Americans every day because of inaction ... than drunk driving and
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data collected as shown in Table 1 of the spreadsheet attached‚ a sample size of 9 (n=9) participants enrolled in the study. Total cholesterol levels measured in children between ages 2 – 6 years was summarized at 1‚765. The sample mean (X) and standard deviation (S) computed as (1765/90) =196.1 and square root summation (X-X) square / n-1 =29.0 respectively. Now to generate a 95% confidence interval for the true mean total cholesterol levels in children from data collected‚ we used the z value for
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statistical procedures are working efficiently. A sample of 800 units has been taken for observations for the study while operations were known to be operating at satisfactory levels. .21 has been set as the sample standard deviation and likewise so has the population standard deviation assumed to be .21 because there are a substantial amount of observations. Random samples of 30 will allow for swift action if said processes are not producing at efficient levels or drop below an average of 12 units
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Effects of Caffeine and Nicotine on Lumbriculus variegatus INTRODUCTION An experiment was conducted to study and explore the circulatory system by exposing Lumbriculus variegatus‚ black worms‚ to household drugs. Lumbriculus variegatus was chosen as the experimental organism because of their transparent bodies and their simple physiology. Their transparent bodies help the experimenters to easily see their pulse. Another reason for choosing this specific organism is their body structure—large
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Report Introduction Markowitz (1952‚ 1956) pioneered the development of a quantitative method that takes the diversification benefits of portfolio allocation into account. Modern portfolio theory is the result of his work on portfolio optimization. Ideally‚ in a mean-variance optimization model‚ the complete investment opportunity set‚ i.e. all assets‚ should be considered simultaneously. However‚ in practice‚ most investors distinguish between different asset classes within their portfolio-allocation
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length of labor in this study descriptive‚ this being represented by mean and standard deviation in the data. Yes‚these are appropriate as they both can be calculated (varible n=30 and mean=14.63) at the interval level of measurements. 3) Nominal level data could be used to describe the length of labor. This would have done by using frequencies‚ percentages‚ and mode instead of using mean‚ range‚ and standard deviation 4) No‚ the distributions of scores were not similar for the two groups. Experimental
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