luigikero luigikero
  • 14-12-2020
  • Mathematics
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The random variable X is normally distributed.

It is given that P(X 7)=0.2.

Find the standard deviation of X. Give your answer as a decimal, rounded to three significant figures.

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Respuesta :

goat0304 goat0304
  • 15-12-2020

Answer:

3

Step-by-step explanation:

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