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IBM Survey: The computer giant IBM has 329,373 employees and 637,133 stockholders.

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Question;1. IBM Survey: The computer giant IBM has 329,373 employees and 637,133 stockholders. A vice president plans to conduct a survey to study the number of shares held by individual stockholders. a. Are the numbers of shares held by stockholders discrete or continuous? b. Identify the level of measurement (nominal, ordinal, interval, ratio) for the number of shares held by stockholders. c. If the survey is conducted by telephoning 20 randomly selected stockholders in each of the 50 United States, what type of sampling (random, systematic, convenience, stratified, cluster) is being used? d. If a sample of 1000 stockholders is obtained, and the average (mean) number of shares is calculated for this sample, is the result a statistic or parameter? e. What is wrong with gauging stockholder views about employee benefits by mailing a questionnaire that stockholders could complete and mail back? 2. European Personal Computer Shipments (in Thousands of PC?s) Company 3rd Quarter 2000 3rd Quarter 1999 Compaq Computers Fujitsu Siemens Dell Computers IBM Hewlett-Packard Others 1,125 821 669 595 583 4,273 1,096 882 656 488 441 3,773 Asia/Pacific Personal Computer Shipments (in Thousands of PC?s) Company 3rd Quarter 2000 3rd Quarter 1999 Legend IBM Samsung Electronic Compaq Computer Acer Others 511 396 340 327 244 2,783 269 282 163 265 163 2,258 For both the European and Asia/Pacific markets: a. Construct pie charts for 1999 and 2000. b. Construct a side-by-side bar chart for the data. c. Which type of chart does a better job illustrating the changes from 1999 to 2000? d. Which type of chart does better job illustrating the market share for a particular company? Explain. e. What conclusions can you make about the personal computer markets in Europe and Asia/Pacific? 3. Following is the data on the total fat, in grams per serving, for a sample of 20 chicken sandwiches from fast food chains: 3 points 7 8 4 5 16 20 20 24 19 30 23 30 25 19 29 29 30 30 40 56 a. Place the data in an ordered array b. Construct a stem-and-leaf display c. Does the ordered array or the stem-and-leaf display provide more information? Discuss Chapter Three Calculating Descriptive Statistics 4. When designing a new thrill ride for an amusement park, the designer must consider the sitting heights of males. Listed are the sitting heights of males (in millimeters) obtained from a simple random sample (based on anthropometric survey data). Use the given sitting heights to find the (a) mean, (b) median, (c) mode, (d) midrange, I range, (f) standard deviation, (g) variance, (h) Q1, (i) Q3. 936 928 924 880 934 923 878 930 936 5. Scores on SAT test have a mean of 1518 and a standard deviation of 325. Scores on the ACT test have a mean of 21.1 and standard deviation of 4.8. Which is relatively better: a score of 1840 on the SAT test or a score of 26.0 on the ACT test? Why? Chapter Four Introduction to Probabilities 6. Clinical trials of Pregnancy Test Results Positive test results Negative test results Subject is pregnant Subject is not pregnant 80 3 5 11 Assuming that 1 person is selected is randomly selected from 99 people included in the study. Apply the addition rule to find the probability of selecting a subject who is pregnant or had a positive test result. 7. The New York Times ran an article that analyzed a survey conducted by Opinion.com. The survey found that 70% of white males felt that the Obama administration is not handling foreign affairs effectively. If seven people were selected at random, what is the probability that all seven felt that the Obama administration is not handling foreign affairs effectively? 8. For graduation, the Smith family is planning a dinner for relatives. Determine the number of ways in which 12 people (6 males and 6 females) can be selected from 13 males and 15 females. Chapter Five Discrete Probability Solutions 9. Professor Bob Smith conducted a survey of his students to determine their satisfaction with the school accommodations. He asked his students to rank to accommodations on a scale of one(1) to five (5) where 5 is highly satisfied and 1 is not satisfied at all. Students Ranking Jersey City Campus Wall Campus 5 20 18 4 36 15 3 8 18 2 12 12 1

 

Paper#47559 | Written in 18-Jul-2015

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