SAT scores for students selected randomly from two different schools are shown in the table.At a significance level of 0.05,does the Wilcoxon rank sum test provide evidence of a difference between the two schools? 
Definitions:
Observed Time
The actual amount of time measured for a task or process to be completed, as opposed to estimated or standard time.
Allowance Factor
A coefficient applied to account for uncertainties, variations, or additional capacity in calculations or designs.
Standard Time
The pre-determined time allowed for the completion of a specific task, under normal working conditions.
Performance Rating
An evaluation measure used to assess the efficiency, effectiveness, or output level of employees, processes, or equipment against predefined standards.
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