Applied Statistics and Probability for Engineers 6th Edition solutions

Applied Statistics and Probability for Engineers 6
Ten samples were taken from a plating bath used in an electronics manufacturing process, and the bath pH of the bath was determined. The sample pH values are 7.91, 7.85, 6.82, 8.01, 7.46, 6.95, 7.05, 7.35, 7.25, and 7.42. Manufacturing engineering believes that pH has a median value of 7.0. (a) Do th

Applied Statistics and Probability for Engineers 6
The titanium content in an aircraft-grade alloy is an important determinant of strength. A sample of 20 test coupons reveals the following titanium content (in percent): The median titanium content should be . (a) Use the sign test with \(\alpha=0.05\) to investigate this hypothesis. Find the P-valu

Applied Statistics and Probability for Engineers 6
The impurity level (in ppm) is routinely measured in an intermediate chemical product. The following data were observed in a recent test: 2.4, 2.5, 1.7, 1.6, 1.9, 2.6, 1.3, 1.9, 2.0, 2.5, 2.6, 2.3, 2.0, 1.8, 1.3, 1.7, 2.0, 1.9, 2.3, 1.9, 2.4, 1.6 Can you claim that the median impurity level is less t

Applied Statistics and Probability for Engineers 6
Consider the margarine fat content data in Exercise . Use the sign test to test\(H_0\ :\tilde{\ \mu}=17.0\) versus \(H_0\ :\ \tilde{\mu}\ne 17.0\) with \(\alpha=0.05\). (a) Find the P-value for the test statistic and use this quantity to make your decision. (b) Use the normal approximation to test t

Applied Statistics and Probability for Engineers 6
Consider the compressive strength data in Exercise 8-62. (a) Use the sign test to investigate the claim that the median strength is at least 2250 psi. Use \(\alpha=0.05\). (b) Use the normal approximation to test the same hypothesis that you formulated in part (a). What is the P-value for this test?

Applied Statistics and Probability for Engineers 6
Problem 127E An inspector are measured the diameter of a ball bearing using a new type of caliper. The results were as follows (in mm): 0.265, 0.263, 0.266, 0.267, 0.267, 0.265, 0.267,0.267, 0.265, 0.268, 0.268, and 0.263. (a) Use the Wilcoxon signed-rank test to evaluate the claim that the mean ball

Applied Statistics and Probability for Engineers 6
Problem 128E A new type of tip can be used in a Rockwell hardness tester. Eight coupons from test ingots of a nickel based alloy are selected, and each coupon is tested using the new tip. The Rockwell C-scale hardness readings are 63, 65, 58, 60, 55, 57, 53, and 59. Do the results support the claim t

Applied Statistics and Probability for Engineers 6
Problem 129E A primer paint can be used on aluminum panels. The primers drying time is an important consideration in the manufacturing process. Twenty panels are selected, and the drying times are as follows: 1.6, 1.3, 1.5, 1.6, 1.7, 1.9, 1.8, 1.6, 1.4, 1.8, 1.9, 1.8, 1.7, 1.5, 1.6, 1.4, 1.3, 1.6, 1.