State whether the following statements are true or false and also give the reason in support of your answer:
(a) The total number of all possible samples of size 2 without replacement from a population of size 7 is 21.
(b) Consecutive 3 random numbers starting from 8937 by 'middle square method' are 8937, 8699, 6726.
(c) RBD is suitable in situations where it is not possible to divide the experimental material into a number of homogeneous blocks.
(d) As we increase the sample size, representativeness of the population by the sample decreases.
(e) In a big hall, there are 50 rows and each row has 60 students. A research scholar selects 10 rows randomly and then randomly selects 15 students from each selected row. It is an example of cluster sampling procedure

(a)True

Since , The total number of all possible samples of size 2 without replacement from a population of size 7

= ⁷C₂ = (7x6x5!)/(2x1)x(7-2)! = (7x6x5!) / 2 x 5! = 7x3 = 21

(b) . True

As by middle square method,

(8937)² = 79869969 

by taking middle 4 digits , _____ ________ ___ _____ ____ _________ _________ _______ ______ ____ __________ _____.
_______ ___ _______ ______ ___ _________ _________.
________ ____ _____ _____ _______ _________ _______ _________ ______ _______ ___ ___.
_________ _______ _______ ____ ________.
________ ______ _______ ________ _____ __________ ____ _____.
_______ ______ _________ _______ _________ ___ _______ _______.
_______ __________ ___ ___ _______ ____ __________ _______ __________ _____ _____.
____ ____ _____ _________ _______ ___ ______ _______.
____ _______ _______ _______ ___ _______ __________ ____ _______ __________.
________ _______ __________ _______ __________ _____ _______ ___ ___.
_________ _____ ___ __________ _________ ____ _______ _________ ____ __________ ____ _________.
______ _________ ________ __________ ______ ____ _________ __________ _____ _____ _____ ____.
_____ ________ ______ __________ ____ _________ ______ __________ ______ ___ ______ _________.
_____ _____ _____ _________ _______ _________.
_______ ___ __________ ___ ______ __________ __________ ___ ______.
Get Full Answer on WhatsApp