Question

ment "The breaking strength of Brand A cotton threads is larger than the Brand B" is true. These students randomly selected 10 Brand A cotton threads and 10 Brand B cotton threads. Assume that population distributions for both Brands A and B are approximately independent normal. The breaking strength of each brand is indicated in following table. The data and relevant R commands and outputs are given below. Answer the following questions from 1 though 5. Brand A 208.5, 187.6, 194.6, 205.8, 188.8, 209.1, 207.2, 208.8, 181.5, 200.5 Brand B 198.8, 212.2, 177.3, 155.1, 219.3, 191.4, 201.4, 188.1, 191.7, 156.0 > B1<-c(208.5, 187.6, 194.6, 205.8, 188.8, 209.1, 207.2, 208.8, 181.5, 200.5) > B2<-c(198.8, 212.2, 177.3, 155.1, 219.3, 191.4, 201.4, 188.1, 191.7, 156.0) > mean(B1) [1] 199.24 > mean(B2) [1] 189.13 > sd(B1) [1] 10.34442 > sd (B2) [1] 21.33052

Answer 1

(4) Type nyect I error would mean that une conclude that we MA = MB when MA = MB actually. dyne 2 Error would mean that we conclude that also MA MB when ac actually MA & 7 MB de per Chegy's Chegy's policy, only first 4 first 4 parts would be auswend.