Can someone help?

A shareholders' group, in lodging a protest, claimed that the mean tenure for a chief executive office (CEO) was at least nine years. A survey of companies reported in the Wall Street Journal found a sample mean tenure of it = 8.62 years for CEOs with a standard deviation of $ = 6.61 years. a. Formulate hypotheses that can be used to challenge the validity of the claim made by the shareholders' group. Ho : / - Select your answer - v Ha : H - Select your answer - v 9 b. Assume 70 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-value - Select your answer - C. At Q = 0.02, what is your conclusion? - Select your answer - v| the null hypothesis. We |- Select your answer - v|enough evidence to disprove the shareholder group's claim