The information below was obtained from the records of the first processing department of Moore Company for the month of May. The company uses the weighted-average method in its process costing system. 
All materials are added at the beginning of the process.
-The equivalent units for materials for the month of May were:
Definitions:
Hawthorne Effect
The phenomenon where subjects alter their behavior simply because they are aware that they are being observed.
Random Errors
Errors in measurement that lead to inconsistent results, often caused by unpredictable and uncontrollable factors.
Randomized Controlled Trials
A study design that randomly assigns participants into an experimental group or a control group to measure the effect of an intervention.
Face Validity
The degree to which an assessment or test appears to measure what it is intended to measure, based on subjective judgment.
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