xjuju1030
21.05.2020 •
Mathematics
An analyst takes a random sample of 25 firms in the telecommunications industry and constructs a confidence interval for the mean return for the prior year. Holding all else constant, if he increased the sample size to 30 firms, how are the standard error of the mean and the width of the confidence interval affected? Standard error of the mean Width of confidence interval A Increases Becomes wider B Increases Becomes narrower C Decreases Becomes wider D Decreases Becomes narrower
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Ответ:
It would be: 48 * 3/4 = 36
your answer is 36