Suppose that the Mathematics marks of all the students in the class are normally distributed with mean mark 54 and standard deviation 16. What is the probability that a student's mark is more than 75? In a class of 50 students, how many students should have a mark of more than 75?

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leeannvv2003 leeannvv2003

07-11-2022
Mathematics

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Suppose that the Mathematics marks of all the students in the class are normally distributed with mean mark 54 and standard deviation 16. What is the probability that a student's mark is more than 75? In a class of 50 students, how many students should have a mark of more than 75?

Sagot :

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Suppose that the Mathematics marks of all the students in the class are normally distributed with mean mark 54 and standard deviation 16. What is the probability that a student's mark is more than 75? In a class of 50 students, how many students should have a mark of more than 75? ​

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Suppose that the Mathematics marks of all the students in the class are normally distributed with mean mark 54 and standard deviation 16. What is the probability that a student's mark is more than 75? In a class of 50 students, how many students should have a mark of more than 75?