Q: Calculate the mean, standard deviation, and 95% confidencelimits for each set.
A | B | C | D | E | F |
3.5 | 70.24 | .812 | 2.7 | 70.65 | .514 |
3.1 | 70.22 | .792 | 3.0 | 70.63 | .503 |
3.1 | 70.10 | .794 | 2.6 | 70.64 | .486 |
3.3 | | .900 | 2.8 | 70.21 | .497 |
2.5 | | | 3.2 | | .472 |
Q2: A type of steel contains 1.12% nickel and the standarddeviation is 0.03%. The following data are collected (inpercent)
a) 1.10 b) 1.08 c) 1.09 d) 1.12 e) 1.09
Is there an indication of bias in the method at the 95%level?
