Question: Need help with test statistic please You may need to use the appropriate technology to answer this question. A shareholders' group, in lodging a protest,

Need help with test statistic please

You may need to use the appropriate technology to answer this question. 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 x = 7.27 years for CEOs with a standard deviation of s = 6.38 years. (a) Formulate hypotheses that can be used to challenge the validity of the claim made by the shareholders' group. O Ho: HS 9 Ha : H > 9 Ho: H = 9 Ha: u # 9 O Ho: H 9 Ha: us9 Ho: H 29 Ha:H

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