In: Statistics and Probability
Study Aim to determine the effect of four different types of tips in a hardness tester on the observed hardness of a metal alloy. Four Specimen of the alloy were obtained, and each tip was tested once on each specimen, producing the following data
Tips | specimen | |||
1 | 9.3 | 9.4 | 9.6 | 10 |
2 | 9.4 | 9.3 | 9.8 | 9.9 |
3 | 9.2 | 9.4 | 9.5 | 9.7 |
4 | 9.7 | 9.6 | 10 | 10.2 |
a) Perform Anova using Minitab and present the table - please provide us with Minitab table?
b) is there an effect of the type of tips on the hardness.
c) Use fisher LSD to investigate the difference between the tips?