The following standards for variable manufacturing overhead have been established for a company that makes only one product: 
The following data pertain to operations for the last month:
What is the variable overhead efficiency variance for the month?
Definitions:
Sex Chromosomes
Chromosomes that determine an individual's biological sex, typically presented as XX for females and XY for males in humans, affecting the development of sexual characteristics.
Adoption
The legal process by which a person becomes the lawful parent of a child who is not their biological offspring, providing the child with a new permanent family.
Personality Traits
Enduring characteristics or qualities that define an individual's patterns of thought, feeling, and behavior.
Genetics
The study of heredity and the variation of inherited characteristics.
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