In: Statistics and Probability
To test whether the mean time needed to mix a batch of material is the same for machines produced by three manufacturers, the Jacobs Chemical Company obtained the following data on the time (in minutes) needed to mix the material.
Manufacturer 1 | Manufacturer 2 | Manufacturer 3 |
25 | 34 | 18 |
31 | 32 | 17 |
29 | 37 | 21 |
27 | 33 | 20 |
a. use these data to test whether the population mean times for mixing a batch of different material differs for the three manufacturers. use .05
Compute the Values below
Sum of squares, treatment | |
sum of squares, error | |
mean squares, treatment | |
mean squares, error |
Calculate the value statistic
B. a the .05 level of significance, use the fisher LSD procedure to test the equality of the means for manufacturer 1 and 3
Calculate Fisher's LSD value