Question

6) A school has a total of 475 students. You want to extract a sample of 80. Explains in detail how that sample is obtained by random sampling.

Answer 1

Solution:

first we know that random sampling can be divided into two classes as simple random sampling with replacement and simple random sampling with replacement .

In simple random sampling with replacement we add the previous selected item in the population and then take new sample but in simple random sampling without replacement we can be add previous selected item in the population till to the end

now here we use simple random sampling with replacement for finding 80 samples from the population of 475 student

1) we go the class of 475 students and directly select 80 student as randomly and make a required sample group

2) we divided the all students in to equal group as 5 or 6 student group and select one student from each group at randomly and make a sample of 80 students.

Thank You..!!