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Hi john sir, hope you r best at health. Plz explain me the following question.
a sample of 10% of Cat students is required. which one of the following methods will provide the best simple random sample?
a. select every tenth CAT student to arrive at their college on one specific day.
b. select randomly, using random number tables, one in ten of every CAT class.
c. select 10% of college providing CAT courses, then from these choose all students who are registered with CAT.
d. Select 10% OF all students registered with CAT, giving each a chance of 0.1 of being picked.John sir option D is correct in answer. plz explain if it is correct one giving more explanation on the statement ( giving each a chance of 0.1 of being picked)
Q#2 A cash budget prepared for forthcoming three months show a substantial cash surplus in the first tow months. suitable action would be to:
i. pay supplier early to receive a cash discount.
ii. buy new plant & machinery
iii. invest in treasury billsa. (i) & (ii)
b. (i) & (iii)
c. (ii) & (iii)
d. (i) onlyThe correct answer to Q1 is D.
A is wrong because it is only a sample from those arriving on one day (instead of out of all CAT students)
B is wrong because it is only choosing from people in classes
C is wrong because 10% of classes will not mean 10% of all students (some classes will be bigger than other classes)
D is correct because it is 10% of all CAT studentsQ2 Yes – answer is D. There is only a surplus in the first two months and so we do not want to tie up the money for too long.
Thanks alot for your kind reply. John sir plz explain a little bit more question no. 2. why not investment in treasury bills?
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