Corrections to Sample Size Calculations: Practical Methods for Engineers and Scientists by Paul Mathews, ISBN 978-0-615-32461-6. Errata to Version 24 February 2010 p. 9, Eq 1.13: Change z_10 to z_0.10 p. 15, Eq. 1.19: Change (1 - delta) on right hand side to (1 + delta) p. 15, Change reference to 3.1.1.1 to 3.1.1.2 p. 37, Example 2.8: Add words to problem statement "... a confidence interval for the difference between two independent population means with half-width ..." p. 47, Example 2.12: Change 504 to 505 in problem statement. p. 70, Eq. 3.44, first equation is missing CV in the denominator, should be delta = z_alpha/2 * sigma / CV p. 74, Table 4.1, column P(0 < p < pU) = 1 - alpha, row chi-square approximation: change the probability subscript on the chi-square value from 1 - alpha/2 to 1 - alpha. p. 80, Eq. 4.20: Insert missing minus sign in front of zbeta p. 81, Example 4.4: Change 2.385 to 2.066 in two places, change 0.9915 to 0.9806 p. 81, Example 4.4: Insert missing minus sign in front of 2.066. Correct interval is (-infinity < z < -2.066) p. 83, Example 4.7: In example statement change 8% to 9%, 10% to 5%, and in solution change (0.08,0.10) to (0.09,0.05). p. 92, Example 4.12: Replace n = 69, c = 40 with n = 64, c = 37, alpha = 0.0497, pi = 0.9036 p. 97, last sentence of intro to Section 4.3.2: Omit the final "s" in the word "calculations, that is, "The power calculations for ..." should be "The power calculation for ...". p. 98, Example 4.16: Change power in solution from 0.69 to 0.60 p. 127, Example 5.7: add "log and" before "square root transform" p. 152, Example 7.8: Correct rounding error, change n = 39 to n = 40 p. 154, Eq. 7.47: Missing reference number to Sheskin [60] p. 166, Example 8.3: In problem statement, change reference to Eq. 8.6 to Eq. 8.7. p. 175, Example 8.9: Change the answer from 0.618 to 0.628 p. 175, Reference to Burdick [10] should be to a different Burdick reference. See errata for p. 317. p, 186: Before Eq. 8.38: Remove the word "conservative" p. 194, Example 9.3: Delete the equation number in the solution (9.13). ONLY IN FUTURE EDITIONS! p. 197, Example 9.6: Replace 1.645 with 1.96. p. 198, Example 9.7: Change the wording to "Find the sample size for an experiment to estimate, ..." p. 230-231, Examples 108 and 10.9: Change alpha = 0.05 to 0.10 p. 231, Eq. 10.33: Change equals sign to approximately equals sign. p. 175, 258, 260: Reference to Burdick [10] should be to another missing Burdick reference. See entry for p. 317. p. 260: Change df_error = 49 to 48 p. 270: In Step #5, delete the word "is" in the phrase "is given by the fraction". p. 274: Change "When the value of alpha is not specified ..." to "When the value of the type one error rate alpha is not specified ...". p. 314: mu_CV should be sigma_x / mu_x p. 317, Missing reference to Burdick, Richard K., Connie M. Borror, and Douglas C. Montgomery (2005). Design and Analysis of GR&R Studies: Making Decisions with Confidence Intervals in Random and Mixed ANOVA Models. ASA-SIAM Series on Statistics and Applied Probability, Philadelphia: SIAM and Alexandria, VA: ASA. See associated corrections on p. 175 and 260.