A normal distribution has a mean of 140 and a standard deviation of 40. How do you calculate a percentile rank of a score of 172? | Socratic
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Assume the random variable X is normally distributed with mean mu = 42 and standard deviation sigma = 4. Find the 10th percentile. (Round to two decimal places as needed.) | Homework.Study.com
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SOLVED: Example #2 959 of students at school are between Im and Zm tall: Assuming this data is normally distributed, can you calculate the mean and standard deviation? The mean is halfway
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