All values of \(a\) for which the inequality \[ \frac{1}{\sqrt{a}} \int_{1}^{a} \left( \frac{3}{2} \sqrt{x} + 1 - \frac{1}{\sqrt{x}} \right) dx < 4 \] is satisfied, lie in the interval.
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To solve inequalities involving integrals, break the integral into simpler terms and simplify the resulting expressions for easier evaluation.