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4.

This year, the ACT score is normally distributed with a mean of 22.3 points and a standard deviation of 4.4 points. Let $X$ be the ACT score of a randomly selected student. 1. Describe the probability distribution of $X$ and state its parameters $?$ and $?$ : $X?(?=,?=$ 2. Find the probability that the ACT score of a randomly selected student is a. less than 23.6 points. (Round the answer to 4 decimal places) b. between 35.2 and 35.3 points. (Round the answier to 4 decimal places) c. more than 25.5 points. (Round the answer to 4 decimal places) 3. Find the 35 -th percentile for the ACT score. points (Round the answer to 1 decimal place) Question Help:

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