State the value of 
without the use of a calculator.
Definitions:
Insecticide
A chemical substance used to kill insects.
Median Difference
The middle value separating the higher half from the lower half of a data set's difference distribution.
Sign Test
A non-parametric statistical test used to evaluate whether the median of a population differs significantly from a specified value.
Significance Level
The threshold used in hypothesis testing to determine whether to reject the null hypothesis, commonly denoted as alpha (α).
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