Which of the following was true of black musicians and radio in the 1930s? A. Some black musicians and higher salaries working on the radio programs than writers Announcers and white performers

B. Black musicians Who performed for radio were paid a tiny fraction of what comparable white magicians were paid

C. Black musicians dominated the radio airwaves a 1930s

D. Black musicians Rejected the commercial and technology developments that revolutionized the music industry in the 1920s and 1930s

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