Question: Implement the following functions in Scheme using foldl, filter and map. DO NOT use recursive definition for this problem. a) (5pt) Define a function thres,
Implement the following functions in Scheme using foldl, filter and map. DO NOT use recursive definition for this problem.

a) (5pt) Define a function thres, which takes a lower bound a, an upper bound b and a list of numbers, and returns a new list consisting of numbers in the old list that are a and b. For example
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