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SAT scores are normally distributed with a mean of 500 and a standard deviation of 100. Find each of the following.

1) The minimum score to put you in the upper 25% of scores

2) The z-score of an SAT score of 670

3) The percentage of scores between 420 and 620

4) The percentage of scores below 350


Sagot :

Answer:

i dont know

Step-by-step explanation: