Let P(A) = 0.45, P(B | A) = 0.30, and P(B | Ac) = 0.06. Use a probability tree to calculate the following probabilities: (Round your answers to 3 decimal places.) a. P(Ac) b-1. P(A ∩ B) b-2. P(Ac ∩ B) c. P(B) d. P(A | B)

Suppose you are choosing a 6-digit personal access code. this code is made up of 4 digits chosen from 1 to 9, followed by 2 letters chosen from a to z. any of these digits or letters can be repeated. find the total number of personal access codes that can be formed. 492,804 341,172 39,917,124 4,435,236