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Marks obtained by students in an examination follow the normal distribution.If 30% of students got below 35 marks and 10% got above 60 marks.Find mean and standard deviation
written 6.2 years ago by gravatar for teamques10 teamques10 ★ 65k •   modified 2.4 years ago

Subject: Applied Mathematics 4

Topic: Probability

Difficulty: Medium
engineering mathematics
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written 2.4 years ago by gravatar for teamques10 teamques10 ★ 65k

Let µ(meu) be the mean and σ standard deviation.
If x = 35(Marks), then z = (35-µ) / σ
If x = 60(Marks), then z = (60-µ) / σ

Since, we have a total of 100% so let's divide in into two parts as we have only parts in questions. …

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