A shareholders' group, in lodging a protest, claimed that the mean tenure for a chief executive office (CEO) was at least eleven years. A survey of companies reported in the Wall Street Journal found a sample mean tenure of 2 10.28 years for CEOs with a standard deviation of -6.82 years. O a. Formulate hypotheses that can be used to challenge the validity of the claim made by the shareholders' group. Ho 11 H.: 11 b. Assume 90 companies were included in the sample. What is the p-value for your hypothesis test? Enter negative value as negative number t-value -1.922 (to 3 decimals) p-value between 10 and 20 c. At a 0.01, what is your conclusion? Do not reject the null hypothesis. We don't have # enough evidence to disprove the shareholder group's claim