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Q5 (8 points) Q5(8). A random sample(n = 18) about annual salary for one position, sample man is = 54500, standard deviation is o = 9500. Assume the distribution of the salary is normal. 1(4). Find a 90% confidence interval for the true mean annual salary. 2(4). How large the sample size is necessary for the bound on the error of estimation to be 3000. Ca + Drag and drop an image or PDF file or click to browse.. Time left Hide