1. The Wechsler Adult Intelligence Scale scores are calibrated to vary according to a normal distribution with µ = 100 and σ = 15. What Wechsler scores cover the middle 50% of the population?
1. The Wechsler Adult Intelligence Scale scores are calibrated to vary according to a normal distribution with µ = 100 and σ = 15. What Wechsler scores cover the middle 50% of the population? In other words, identify the 25th percentile and 75th percentile of the population.