In many casinos, the dealer must hit until he or she has at least 17. if the dealer's face-up card is a 10 or face card, what is p(dealer points ≥ 17)?

To calculate desired probability (p) of greater than or equal to 17, assuming 52 cards in a deck, a "10" played, there are 51 cards remaining, 26 of which make the total of 17 or higher. Thus, p =26/51 = 0.51 for this outcome.