The marks of 1000 students in an examination follow a normal distribution with a mean 70 and a standard deviation 5. Find the number of students whose marks will be (i) less than 65 (ii) more than 75 (iii)between 65 and 75
Answer:-
The marks of 1000 students in an examination follow a normal distribution with a mean 70 and a standard deviation 5. Find the number of students whose marks will be less than 65, more than 75, or between 65 and 75