Question

The distribution of a sample of students
appearing for a C.A. examination is:
Marks 0-100
100-
200
150
200-
300
190
300-
400
220
240
400-
500
180
180
500-
600
130
130
No. of
stu-
dents
Help C.A. institute to decide cut off marks
for qualifying the examination when 3%
students pass the examination.​

Answer 1

Answer:

z = (cut off value - Mean) / Standard deviation

z score = 1.882

Step-by-step explanation:

Data in Table is not readable

Procedure to solve

Find Mean

Then  Standard deviation

then z = (cut off value - Mean) / Standard deviation

Value of z  for 3 % Qualifying means that 97% are not Qualified

so z score = 1.882

putting z value , Mean & standard deviation

calculate cut off value , which will be cut off Mark