Answer Happy

easoning Assessment. A shareholders' group is lodging a protest against your company. The shareholders group claimed that the mean tenure for a chief executive officer (CEO) was at least 10 years. A survey of 91 companies reported in The Wall Street Journal found a sample mean tenure of 9.5 years for CEOs with a standard deviation of s = 5.7 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 validity of the claim made by the group, at a significance level of a = 0.002. Please state your hypotheses, give me the test statistics and p-value, and write a conclusion sentence about your findings. Make sure to state if you are rejecting or failing to reject the null hypothesis.