# BUSI 275 Fall 2011 HW Assignments

All homeworks should be turned in electronically to myCourses. Homeworks are due by 10pm on the due date. Submit each homework as two files: one text document (e.g., Word) with tables/figures included inline, formatted in MLA style or similar; and one Excel spreadsheet showing the work you did to produce the results in the text document.
Datasets for textbook problems are in this subdirectory.

## HW1 (due Thu 15 Sep) (20pts)

• p.24, #1-54, 1-58
• p.51, #2-4, 2-18, 2-22
• p.65, #2-40, 2-44
• p.74, #2-58, 2-62
• p.79, #2-74, 2-76

## HW2 (due Thu 22 Sep) (20pts)

• p.73, #2-46, 2-57
• p.78, #2-72
• p.81, Case 2.2 (integrate the charts from 1-4 into the report for 5)
• p.105, #3-4, 3-8, 3-12, 3-20, 3-22
• p.116, #3-34, 3-38

## HW3 (due Thu 29 Sep) (20pts)

• p.124, #3-54, 3-66
• p.134, #3-90
• p.157, #4-8, 4-18
• p.180, #4-30, 4-36, 4-42, 4-56
• p.190, Case 4.2

## HW4 (due Thu 6 Oct) (20pts)

• p.210, #5-36, 5-48
• p.224, #5-60, 5-68
• p.228, #5-80, 5-82
• p.246, #6-16, 6-20, 6-26, 6-30
• p.255, #6-34, 6-44, 6-48

## HW5 (due Thu 13 Oct) (20pts)

• p.287, #7-34, 7-40
(7-34(c): replace "... will have an average ..." with "... will indicate an adjustment is needed.")
34(a): 12.65%, (b): 95.68%, (c): 9.424
40: probability that the filling process works as expected is essentially zero
• p.296, #7-56, 7-64
56(a): 9.58%, (b): 34.54%, (c): 64.72%
64(b): 6/36 = 0.17, (c): 1-BINOMDIST(5,36,.13,1) = 32.38%, or using normal approximation, 1-NORMDIST(6/36, .13, SQRT((6/36)*(1-6/36)/36), 1) = 27.75%.
• p.301, #7-84, 7-88
84: BINOMDIST(.68*500, 500, .7, 1) = 17.67%, or using normal approx, NORMDIST(0.68,0.7,SQRT(0.68*(1-0.68)/500),1) = 16.89%. Doubt the claim.
88(a): 221.67, (b): 38.33, (c): probability that there was no change is essentially zero, so fares did change.
• p.322, #8-16, 8-22
16(a): 318, (b): normal, (c): 284.63 to 351.37, (d): no, outside the conf int.
22: Scorpion: 1.47 to 1.91, Vanguard: 0.32 to 0.41. yes, Scorpion's visibility is higher.
• p.329, #8-40, 8-46
40(a): 753, (b): 20%.
46(a): 1.195, (b): 108, (c): yes
• p.337, #8-62, 8-68
62(a): 263 more, (b): 10.79% to 16.76%
68(a): 88.40% to 95.88%, (b): 3.74%, (c): yes, within the conf int.

## HW6 (due Thu 27 Oct) (20pts)

• p.367, #9-14(abd), 9-20, 9-22
• p.374, #9-36, 9-40
• p.392, #9-98
• p.407, #10-8, 10-12
• p.421, #10-28, 10-34
• p.444, #10-76(ac)

## HW7 (due Tue 8 Nov) (20pts)

• p.430, #10-46, 10-48
• p.438, #10-56, 10-60
• p.545, #SR.6, #SR.10
• p.588, #14-8, 14-14
• p.610, #14-22, 14-24, 14-28

## HW8 (due Tue 22 Nov) (20pts)

• p.652, #15-8
• p.698, #15-54 (skip e) (for f: a histogram is sufficient, with analysis)
• p.495, #12-12, 12-14
• p.509, #12-28
• p.519, #12-40
• p.525, #12-54