service clients. However‚ TDS is organized into 100 different geographically regions. The average sales for a region is $1‚000‚000‚ with a standard deviation of $100‚000. The manager of each geographical region has the autonomy to establish a compensation plan. The average annual compensation for an insurance agent is $60‚000‚ with a standard deviation of $12‚000. Assume that TDS has hired you as a consultant. Your services are desired to help TDS make two critical decisions. The first decision
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7) Data from a small bookstore are shown in the accompanying table. The manager wants to predict Sales from Number of Sales People Working. Number of sales people working | Sales (in $1000) | 4 | 12 | 5 | 13 | 8 | 15 | 10 | 16 | 12 | 20 | 12 | 22 | 14 | 22 | 16 | 25 | 18 | 25 | 20 | 28 | x=11.9 | y=19.8 | SD(x)=5.30 | SD(y)=5.53 | a) Find the slope estimate‚ b1. Use technology or the formula below to find the slope. b1=rsysx Enter x‚y Data in TI-84 under STAT > STAT
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Problems Chapter 7 1. A population of 1‚000 students spends an average of $10.50 a day on dinner. The standard deviation of the expenditure is $3. A simple random sample of 64 students is taken. a. What are the expected value‚ standard deviation‚ and shape of the sampling distribution of the sample mean? b. What is the probability that these 64 students will spend a combined total of more than $715.21? c. What is the probability that these 64 students will spend a combined
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the sample| d.|mean of the population| ANS: A 5. A simple random sample of 100 observations was taken from a large population. The sample mean and the standard deviation were determined to be 80 and 12 respectively. The standard error of the mean is a.|1.20| b.|0.12| c.|8.00| d.|0.80| ANS: A 6. A population has a standard deviation of 16. If a sample of size 64 is selected from this population‚ what is the probability that the sample mean will be within 2 of the population mean? a.|0.6826| b
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travelers‚ one of the biggest complaints is of the waiting time between when the airplane taxis away from the terminal until the flight takes off. This waiting time is known to have a skewed-right distribution with a mean of 10 minutes and a standard deviation of 8 minutes. Suppose 100 flights have been randomly sampled. Describe the sampling distribution of the mean waiting time between when the airplane taxis away from the terminal until the flight takes off for these 100 flights. a) Distribution is
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percentage of people in the fifty states and District of Columbia who do not have health insurance? Median: 13.50 Round your answer to 2 decimal places as necessary.c. What is the standard deviation of the percentage of people in the fifty states and District of Columbia who do not have health insurance?Standard deviation: 4.10 Round your answer to 2 decimal places as necessary. Answer Key: 14.15‚ 13.50‚ 3.96|4.16 | Question 2 of 17 | 1.0 Points | The worksheet “Insurance” in the Excel workbook
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TABLE OF CONTENTS CONCEPTS OF RISK AND UNCERTAINTY 1 Definition Economic Risk Economic risk is the chance of loss because all possible outcomes and their associated probabilities are unknown.Actions taken in such a decision environment are purely speculative‚ such as the buy and sell decisions made by speculators in commodity‚ futures and option markets. All decision makers are equally likely to profit as well as to lose‚ luck is the sole determinant of success or failure. 2 Definition of
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Problem 1 For boys‚ the average number of absences in the first grade is 15 with a standard deviation of 7; for girls‚ the average number of absences is 10 with a standard deviation of 6. In a nationwide survey‚ suppose 100 boys and 50 girls are sampled. What is the probability that the male sample will have at most three more days of absences than the female sample? (A) 0.025 (B) 0.035 (C) 0.045 (D) 0.055 (E) None of the above Solution The correct answer is B. The solution involves
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References: Bhattacharya‚ C. B. (1997). "Is your brand ’s loyalty too much‚ to little‚ or just right?" : Explaining deviations in loyalty from the Dirichlet norm. International Journal of Research in Marketing‚ 14‚ 421-435. Hesse‚ F.‚ Loesch‚ K.‚ Spies‚ Kordelia. (1997). "Store atmosphere‚ mood and purchasing behavior." International Journal of Research in Marketing‚ 14
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of anorexia nervosa‚ leprosy (leprosy stigma)‚ or of a physical disability or social disability‚ such as obesity. 2. Deviations in personal traits‚ including mental illness‚ drug addiction‚ alcoholism‚ and criminal background are stigmatized in this way. 3. "Tribal stigmas" are traits‚ imagined or real‚ of ethnic group‚ nationality‚ or of religion that is deemed to be a deviation from the prevailing normative ethnicity‚ nationality or religion. SOCIAL STIGMA Social stigma is the extreme disapproval
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