Lw_ J A shareholders' group is lodging a protest against your company. The shareholders group claimed that the mean tenure for a chief exective office (CEO) was at least 8 years. A survey of 82 companies reported in The Wall Street Journal found a sample mean tenure of 7.6 years for CEOs with a standard deviation of s = 5.3 years (The Wall Street Journal, January 2, 2007). You don't know the population standard deviation but can assume it is normally distributed. You want to formulate and test a hypothesis that can be used to challenge the vaiidity of the claim made by the group, at a significance level of a = 0.002. Your hypotheses are: Ho:,u28 Hn:,u Next Question _