When a machine is adjusted properly, 50% of the items it produces are good and 50% are bad. However, the machine is improperly adjusted 10% of the time; in this case, 25% of the items it makes are good and 75% are bad. Suppose that five items produced by the machine are selected at random and inspected. If four of these items are good (and one is bad), what's the probability that the machine was adjusted properly at the time? Hint: Try Bayes Theorem using Binomial conditional probabilities. O 0.1674 O 0.5 O 0.8426 O 0.9897