Refer to the information provided in Table 24.4 below to answer the question(s) that follow.
Table 24.4 
-Refer to Equation 24.4. At equilibrium, the sum of investment and government purchases in Peru is
Definitions:
Binet
Alfred Binet, a French psychologist best known for developing the first intelligence test.
Thurstone
Refers to Louis Leon Thurstone, an influential American psychologist known for his contributions to psychometrics and the theory of intelligence.
Wechsler
Refers to David Wechsler, a psychologist who developed several widely used intelligence scales, including the Wechsler Adult Intelligence Scale (WAIS).
Spearman
was a British psychologist known for his work in statistics and intelligence, notably proposing the theory of general intelligence, or the "g factor."
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