(1) The mean and standard deviation of marks of 500 students in an examination are 52 and 8 respectively. If the marks are normall

Question

(1) The mean and standard deviation of marks of 500 students in an examination are 52 and 8 respectively. If the marks are normally distributed. Find If the standard of
passing is 36 marks find the number of students falling in the examination

Eloise · Answer

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Liliana

how many terms of the A.P -6,-11/2,-5 _______ are needed to give the sum – 25? Explain the double answer

23) In a symmetrical distribution the mean, SD
and range of marks for a group of 20
students are 50, 10 and 30 respectiv

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