10. Stock market efficiency Use the following table to determine whether each scenario is representative of weak-form, semistrong-form, or strong-form stock market efficiency. Stock Market Efficiency Type Weak- Semistrong- Strong Form Form Form Scenario Musashi, a chief financial officer of a public children's toy company, believes that the firm will begin to lose customers due to several product releases that he thinks are going to be unsuccessful. As a result of losing customers, Musashi believes that revenues will decrease sharply over the next few years, until the company can begin producing successful products. Musashi decides to short stock in the company in order to benefit from what he thinks will be a catastrophic price decrease in the coming months. Unfortunately for Musashi, when the products release, the stock price remains where it was, despite the customer's disappointment in the products. O Kyoko notices that Zynga's stock is trading at $11.75 the day before it is scheduled to release its financial data for the quarter. Suppose Fox News runs a segment the night before Zynga plans to announce its financial data and claims that Zynga has had a down quarter due to the change in tariff policies, and as a result, Kyoko decides to short a large amount of stock. Once trading opens the next day, Zynga's stock falls to $9.19 but then rises to $13.80 once their financial announcement is made. o Jacques notices Microsoft's stock continuously increases in value on Mondays and decreases in value on Fridays. He thinks he can profit by purchasing the stock at the end of the week and selling it at the beginning of the week, but when he does, Microsoft's stock does not actually increase on Monday. O