Contracting (narrowing) the UCL and LCL would increase or decrease (pick one) the probability of making a type 1 error. Decrease Increase "The Central Limit Theorem is the basis for using sampling to estimate the population mean, in general, stating that conditional to the samples being of adequate size and enough number * A sample means plot would follow a normal distribution * The mean of the sampling means normal distribution (the grand mean) would approximate the population mean * No matter what the population looks like the sampling means distribution would follow a normal distribution" True False