Homework OM dues 27th

Homework OM dues 27th - OM 210, Summer A-2010, (PROF. Sid...

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OM – 210, Summer A-2010, (PROF. Sid Das) HOMEWORK - 1 (45 points) Please answer on a SCANTRON sheet. WRITE YOUR NAME AND CLASS TIME ON THE TOP OF YOUR SCANTRON SHEET. HOMEWORK DUE DATE is May 27, 2010 Problem A The table below shows a frequency distribution: NUMBER OF HOURS FREQUENCY 1 - 10 40 11 - 20 40 21 - 30 70 31 - 40 50 BASED ON THIS TABLE - ANSWER QUESTIONS 1 THROUGH 4 BELOW. 1. The class width for this distribution is: a. 9 b. 30 c. 11 d. 10 2. The number of students working 30 hours or less is: a. 150 b. 80 c. 70 d. 110 3. The Cumulative Relative Frequency of students working 30 hours or less is: a. 0.2 b. 0.75 c. 0.40 d. 1.0 4. The Relative Frequency for the class 11 - 20 is: a. 80 b. 0.20 c. 0.45 d. 0.65 e. 40 Problem B The sample data below has been collected for a research experiment. 7, 6, 5, 8, 12, 5, 4, 5, 6, 12 BASED ON THIS DATA - ANSWER QUESTIONS 5 THROUGH 9 BELOW. 5. The Median is: a. 5 b. 6 c. 7 d. 8 6. The Mode is: a. 5 b. 6 c. 7 d. 8 7. The Mean is a. 5 b. 6 c. 7 d. 8 1
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8. The Third Quartile is: a. 5 b. 6 c. 7 d. 8 9. The Range is: a. 8 b. 2 c. 10 d.12 Problem C: A bell-shaped distribution has a mean of 15 and a standard deviation of 3.1. BASED ON THIS DATA - ANSWER QUESTIONS 10 and 11 BELOW. 10. What percentage of data values fall between 11.9 and 18.1? a. 95% b. 68% c. 75% d. Almost 100% 11. Between what two data numbers will 95% of the data lie? a. 11.9 and 18.1 b. 5.7 and 24.3 c. 14.05 and 15.95 d. 8.8 and 21.2 12. The mean daily sales for a company last year was $52.37 million with a standard deviation of $2 million. What percentage of sales were between $49.37 to $55.37 million. a. At least 55.55% b. At least 44.44% c. At least 75% d. At least 90% Problem D: The table below shows the probability distribution for the daily demand of microcomputers at a local store. DEMAND
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Homework OM dues 27th - OM 210, Summer A-2010, (PROF. Sid...

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