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Chapter 4

Chapter 4. Problem 4-5. Problem 4-10. Problem 4-11. Problem 4-13(a). Problem 4-13(b & c ). Problem 4-19(Data).  X = 154.  (X -  X) 2 = 62.80. Prob 4-19 cont’d. Problem 4-19 (from previous edition). Problem 4-20 (from previous edition).  X D = 47  X 0 = 78

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Chapter 4

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  1. Chapter 4

  2. Problem 4-5

  3. Problem 4-10

  4. Problem 4-11

  5. Problem 4-13(a)

  6. Problem 4-13(b & c)

  7. Problem 4-19(Data) X = 154 (X - X)2 = 62.80

  8. Prob 4-19 cont’d

  9. Problem 4-19(from previous edition)

  10. Problem 4-20 (from previous edition) XD = 47 X0 = 78 SD = 10 S0 = 15 • CV = (S /X) ×(100) • CVD = (10/47) ×(100) = 21.28% • CVO = (15/78) ×(100) = 19.23%

  11. Problem 4-22 (from previous edition) • X<10 = $5.25 X>60 = $92.50 • S<10 = $1.52 S>60 = $5.28 • CV = (S /X) ×(100) • CV>60 = (5.28/92.5) × 100 = 5.71% • CV<10 = (1.52/5.25) × 100 = 28.95%

  12. Problems 4-24, 25, 36 4.24. • a. 15 • b. More labor hours are required as the number of rooms increases. 4.25. a. Both variables are nominal. • b. Contingency table • c. Yes, because 32% is more than twice 15%. 4.26. a. Opinion is ordinal and number of shares is ratio. • b. Contingency table • c. Those who own over 1000 shares.

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