ACT Scores Scores on the ACT test are normally distributed with a mean of 21.1 and a standard…

ACT Scores Scores on the ACT test are normally distributed with a mean of 21.1 and a standard deviation of 4.8.a. If one ACT score is randomly selected, find the probability that it is greater than 20.0.b. If 25 ACT scores are randomly selected, find the probability that they have a mean greater than 20.c. Find the ACT score that is the 90th percentile.

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