Answer:
Mean value of the ACT scores
x⁻ = 18.66
Step-by-step explanation:
Explanation:-
Given data
Student scores were as follows: 20, 18, 16, 15, 23, 20.
Mean value or Expected value
x ⁻ = ∑x/n
[tex]x^{-} = \frac{20+18+16+15+23+20}{6}[/tex]
[tex]x^{-} = \frac{112}{6} = 18.66[/tex]
Mean value = 18.66
Final answer:-
Mean value of the ACT scores
x⁻ = 18.66