1 A simplified model for the movement of the price of a

Last updated: 4/10/2023

1 A simplified model for the movement of the price of a stock supposes that on each day stock s price either moves up 1 unit with probability p or moves down 1 unit with probability 1 p The changes on different days are assumed to be independent a What is the probability that after 2 days the stock will be at its original price