Which of the following statements summarizes an impact of communication technology on the presidency? (4 points) Technology ensures that the president's messaging reaches only target audiences. Technology weakens the president's ability to send clear messages to their political base. Technology enhances the president's ability to garner support for their agenda by spreading opinions on social media to multiple target groups. Technology diminishes the impact of the president's formal addresses because the public is dependent upon the president's direct outreach through social media.

Let the sample size of leg strengths be 7 and the sample mean and sample standard deviation be 945 watts and 48 watts, respectively. (a) is there evidence that leg strength exceeds 900 watts at significance level 0.05? find the p-value. there is , evidence that the leg strength exceeds 900 watts at ? -0.05. 0.001 < p-value 0.005 0.05 p-value < 0.10 0.10 p-value < 0.25 o 0.010 p-value 0.025 (b) compute the power of the test if the true strength is 915 watts. (c) what sample size would be required to detect a true mean of 915 watts if the power of the test should be at least 0.9? n= exact number, no tolerance