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a financial analyst determines the yearly research and development investments for 50 blue chip companies. She...

a financial analyst determines the yearly research and development investments for 50 blue chip companies. She notes that the distributions is distinctly not bell-shaped. If the 50 dollar discounts are converted to z-scores? what can be said about the standard deviation of the 50 z-scores?
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Answer #1

The z-score follows distribution with mean 0 and standard deviation 1, no matter what the distribution of raw scores is. Hence the standard deviation of the 50 z-scores will equal to 1

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