A project network is shown below.Use a forward and a backward pass to determine the critical path,and then fill out the table below.Activity times are in weeks. 
Now assume that the times listed are only the expected times instead of being fixed times.Is the probability of being finished in fewer than 25 weeks more or less than 50%?
Definitions:
Standardized Value
A score that has been transformed to have a mean of zero and a standard deviation of one, also known as a z-score, enabling comparison across different scales or distributions.
Wilcoxon Rank Sum Test
A non-parametric statistical test used to compare two independent samples to assess if their population mean ranks differ.
Non-Normality
A situation where a data set does not follow a normal distribution, affecting the choice of statistical methods for analysis.
Rank Sum Statistic
A statistical measure used in non-parametric tests to evaluate the significance of the difference between two independent samples based on ranks of the data.
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