p. 72, Table 4.2: Typographical error; the 5th observations should have a value of 36 (not 37). This typographical error is repeated in several places, as noted in the next few corrections.

 

p. 75, Illustrative Example box, second ordered array listing: replace the fifth value (currently 37) with 36.  The ordered array should be
32    33    34    36    36    38    39    40

 

p. 76, Illustrative Example box, Data for site 2:  The same typographical problem reported for p. 72, Table 4.2 occurs here. In addition, the median reported as part of the five-point summary should be 36 (not 36.5).

 

 

p. 120 Illustrative Example, Line 7: change "0.0039 + 0.0469 + 0.2109 + 0.3164" to "0.0039 + 0.0469 + 0.2109 + 0.4219"

 

p. 138, 5th line of illustrative example: Change e^-1.3 to e^1.3 (no negative sign in this exponent)

 

p. 140, fourth line under the heading "The Standard Normal Table: This says that the Standard Normal table will appear on the inside front cover of the book. The publisher had planned on including a z table on the inside front cover. [They also intended to include a t table on the inside back cover.] This was not accomplished because of a rush to press. We will either remove this sentence or make good on this promise in the next edition.

 

p. 158, bottom of page, "...not take repeated samples from the same population..."

p. 160, text in the figure that says "B. Sampling distributions of x-bars" should say "B. Sampling distribution of x-bars" (no s on "distribution)

 

p. 162, bottom paragraph, line 4, sigma subscript x - need a bar over x (x bar)

p. 163, bottom of page, 2nd step, standardize mean: change to z = (90 - 100) / 4.743 = -2.11, not (90 - 100) / = -2.18; carries over to 3rd and 4th steps

p. 165, bottom of page, quintuple split stem, change 0/1 tag to *, not . , and change 8/9 tag to . , not *. Here is how the stemplot should look:

 

*|1

t|3

f|5

s|7

.|9

 

p. 166, exercise 8.5(a). Change "0.0740" to 0.074". Explanation: The standard deviation of the mean (i.e., SE) calculates to 0.07379, which rounds to 0.0738 (not 0.0740) with four decimal place accuracy. It's more appropriate to report two significant digits or three decimals, so let's report the SE as 0.074.

 

p. 181, Figure 9.4. Delete the "5" and the "arrow" in this figure. [Explanation: I think the arrow and "5" were a remnant of a different figure which was used as the starting point for Fig 9.4. These elements were hidden in hard copy and became evident after translating the computer file to a different version of Illustrator.]

 

p. 193, exercise 9.12. Add to the end of the last sentence "at alpha = 0.05 (two-sided)."

Explanation for addition. An alpha level is not specified by the question. Therefore, you can set alpha at any level you choose. To avoid multiple correct answers, let us set the alpha level at 0.05 (two-sided), which is the most common convention.

 

p. 201, in-line Table of alpha levels, first non-head row: for alpha-level 0.10, change z_1-(.05/2) to z_1-(.10/2)

 

p. 214, first paragraph, last sentence. The exercise is not stated correctly; there is a notational inconsistency. The last sentence should read: What is the probability of T₈ > 2.65? [Cap T with subscript 8, not t_8,.975]. In addition, add this clarifying sentence:  In other words, what is the probability of observing a t random variable with 8 df that is greater than 2.65? The answer on page 515 is correct. The probability is between 0.01 and 0.025.

p. 218, illustrative example top of page, third line, (1.833)(227.684) = 417.3, not 408.2; this changes the interval to 2473.2 to 3307.8.

 

p.218, in exercise 11.13 b), change section number 10.5 to 10.4 (there is no 10.5) 

p. 255, Table 12.13, Source note: Change "Lask1ey" to "Laskey"

 

p. 485, Figure at the top of the page (also posted on http://www.jbpub.com/samples/0763735809/Table_B.pdf): Delete the vertical line that demarcates the right tail of the curve. [Explanation: This line did not appear in the hard copy of the figure but mysteriously appeared in the process of production. It may have been a hidden layer in one *.ai file that reappeared later.]

 

p. 503, 4.1 (c):  The first X on the number line is misplaced. It should look like this:

 

          XXX

1---2---3---4---5

 

p. 504, 4.5, line 4: Change the word "outside" to "above".

 

p. 504, 4.7, last line: Change s = 2.90 to s = 2.88 s² = 8.41 to s² = 8.286.

 

505, 5.3 (a): 4 / 365+365+365+366 (not 365). Answer is still correct.

 

p. 504, 4.15(b), line 5: Change the word "Larger" to "Higher".

 

p. 509, top of page, 2nd line, change 100 - 10.05 to 100 + 10.05

p. 509, under exercise 7.13, 4., change Pr(Z ≥ 1.64) = 0.0505 to Pr(Z ≥ 1.63) = 0.0516      

 

INSTRUCTORS: See most recent version of Instructor_Answer_Key.doc for corrections.

p. 512, exercise 9.11: Under part B., z_stat = -1.17 [add negative sign]

p.513, exercise 10.5: change 2988 to 2998 and change the interval from 2764 to 3212 to 2774 to 3222.