One of the reasons why the concept of an unfair coin is important in probability is that many real-life experiments can be modeled by a toss of an unfair coin. For example, if the probability of the price of the stock moving up during a day is 0.56, then observing the daily movements of the price of the stock can be modeled by a toss of an unfair coin for which Heads is associated with Up and Tails with Down. Thus, the probability of the price of the stock moving up 2 days out of 7 days is exactly the same as the probability of getting 2 heads from tossing the coin 7 times and can be computed using the following formula PlkH) = 0W1 p)\" with n = 7, k = 2, andp = 0.56: P(2H/7) = 027 - 0.562 - 0.44;5 = 21 - 0.3136 . 0.016492 = 0.1086 Find the probability of the price of the stock moving up 7 days out of 10 days: D (Round the answer to 4 decimal places.) Question Help: El Video I21 Written Example 8 Message instructor D Post to forum