The marks of the students are normally distributed. 10% get more than 75 marks and20% get less than 40 marks. Find the mean and standard deviation of distribution.The relevant extract of Area Table (under the normal curve) is given below :2.00.47720.841.28Area0.29950.3997

The appropriate z-score for a given mark of students is expressed as: z=X-μσwhere, X=random mark of…

Answered: The marks of the students are normally…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The marks of the students are normally distributed. 10% get more than 75 marks and 20% get less than 40 marks. Find the mean and standard deviation of distribution. The relevant extract of Area Table (under the normal curve) is given below : 2.0 1.28 0.3997 0.84 0.4772 Area 0.2995