1. Math
2. Statistics And Probability
3. a laboratory has four types of devices used to determine...

# Question: a laboratory has four types of devices used to determine...

###### Question details
1. A laboratory has four types of devices used to determine the pH of soil samples. The scientists who work there want to know whether there are differences in the average readings given by these devices. There were 24 soil samples with known pH levels. These soil samples were randomly assigned to each of the four devices (six samples each). The pH readings for each sample and device were recorded and an ANOVA was run on the data.

Source                                     DF        Sum of Squares                       Mean Square F Value      Pr>F

Model                                         0.584                                                              4.85               0.0108

Error                                           0.803

Corrected Total                          1.387

a. Fill in the missing degrees of freedom and mean squares in the ANOVA table.