A shareholders' group, in lodging a protest, claimed that the mean tenure for a chief executive office (CEQ) was at least eight years. A survey of companies reported in the Wall Street Journal found a sample mean tenure of T = 7.48 years for CEOs with a standard deviation of = 6.83 years. a. Formulate hypotheses that can be used to challenge the validity of the claim made by the shareholders' group. Hy : | - Select yor H, : 1| - Select yor ~v|g 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 (to 3 decimals) p-valug | - Select your answer - v | c. At @ = 0.02, what is your conclusion? elect your answer - v |the null hypothesis. We | - Select your answer - |enough evidence to disprove the shareholder group's claim