SMW – 3rd edition ERRATA

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NOTE: Inside the back cover of our textbooks we provide a Quick Guide To Inference, summarizing all the procedures and presenting the Assumptions and corresponding Conditions students need to address. A publishing mix-up deleted those pages in the first printing of this new edition. You can download them here.

Text:

Page #	Correction
44-5	The data are from 1240 earthquakes (not 2410).
56-7	The data cover years through 2005.
81	The Lower fence is at Q1 minus 1.5 IQR.
90	(5^th line under Fig 5.7) “… covers incomes from $0 to…” (Not the “range” – Doh!)
93	(Last bullet) Delete 2^nd sentence.
94	(Tell’s 3^rd bullet) Delete 2^nd sentence.
112	(3^rd paragraph, 2^nd line) That’s y-bar, not y.
145	Delete the asterisk on Chapter 10 – it’s not optional!
179	Equation for intercept, bo, is missing the bars on x and y
202	(Middle paragraph in bottom section) “… calories in these cereals were underestimated…”
211	(2^nd line up from bottom) “Some variables are not related…”
222	Delete the asterisk on Chapter 10 – it’s not optional!
233	The correct log(Length) coefficients are 4.49 (not 3.65) and -1.08 (not 0.90).
241	(Exercise 11a) Should say 97.2%.
290	(Exercise 32a) Rewrite to eliminate informal use of the term “bias”, to say, “Do you see any potential danger in the company’s plan?”
300	(5^th line above Just Checking) “… difference between the two medians.”
301	(7^th line up) Should say “To avoid this problem…”, not bias.
332	(In the green box, lower right) Eggs commonly come in a carton, not a cartoon!
339	(Exercise #17, at the end of the stem) 9%x10% = 0.9%, not 0.09%
367	(Under the first formula) “So our expected payout comes to…”
368	(In the For Example formula calculating E(X)) The last term’s fraction should be 2/3.
396	(TI Tips title) Correct the spelling of binomial.
397	(In the mid-page equation) The correct SD in the denominator is 42.48
416	(Last line of the box) The p is missing after the first equal sign specifying the mean.
423	(4 lines above the SD formula) That’s y-bar, not y.
442	(JC, first sentence) Delete “other”.
444	(Figure 19.3, axis labels) All three p's need hats.
465	(In the FE's Normal model) The rightmost tickmark should be labeled 0.926
520	(Exercise 12) Should say "...only 54% of those who used the wrist splints improved."
525	(Exercise 16 table) Magnesium sulfate
638	(In the For Example) There are 2 df.
645	(Exercise 18b) Chi-sq = 25.28
A-13	(First TI-89 example) RandInt(0,1) simulates a coin toss.

Answers:

Exercise #	Correction
14.29a)	0.4712
19.3c)	“… should not use methods of this chapter since not a SRS (…”
22.19	Reverse the numbers: “… between 22.1% less and 6.5% more …”
24.15	t = 2.207; P-value = 0.0168
27.21a)	(27.34, 29.07)
27.21b)	(15.44, 25.36)

Solutions Manual:

Page #	Correction
19	13c) The min is 21 points.
60	Delete solution 47d); it answers a question that isn't there!
74	All numbers in solutions 33 and 35 should be updated to those given in the text answers.
226	In the expected value calculation, the correct fractions are 1/6, 5/36, and 25/36.
339	25b) 30/1005 + 50/1005 = 80/1005 = 0.80
462	16c) All expected counts are more than 5.

PTB&RG:

Page #	Correction
II-11	Question 5 statement I should refer to a distribution that's skewed to the left.
17-9,10	Question 4 and solution should read “...at least 3 of the first 10 customers...”