From this PERT/CPM network, determine the list of activities and their predecessors. 
Definitions:
Level of Significance
The threshold below which a null hypothesis is rejected, indicating that the observed result is statistically significant.
Means
Refers to the average value in a set of numbers, calculated by adding all the numbers together and dividing by the count of these numbers.
Critical Value
A threshold value in statistics which, when exceeded by the test statistic, leads to the rejection of the null hypothesis.
P-value
A statistical measure that helps scientists determine the significance of their research results, indicating the probability of observing the data if the null hypothesis were true.
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