Please help me, I will give you a shiny shiny medal :)

A study group consists of 5 students: Bob, Patricia, Mike, Jan, and Maria. 2 of the students must go to the board to demonstrate a homework problem

. List all possible samples of size n=2 from a population of N=5 without placement.
Comment on the likelihood of the sample containing Bob and Patricia.

I'm not sure how to do this besides list them all out- but I feel there is an equation I can use to find this faster with the n and N.

Please give detailed instructions, thanks :) ( and this is simple random sampling).

Question

Please help me, I will give you a shiny shiny medal :)

A study group consists of 5 students: Bob, Patricia, Mike, Jan, and Maria. 2 of the students must go to the board to demonstrate a homework problem

. List all possible samples of size n=2 from a population of N=5 without placement.
Comment on the likelihood of the sample containing Bob and Patricia.

I'm not sure how to do this besides list them all out- but I feel there is an equation I can use to find this faster with the n and N.

Please give detailed instructions, thanks :) ( and this is simple random sampling).

lacris · Answer

I got the total samples of 10 possibilities, but it's wrong. In simple random sampling do we count repeats or no?

mazmaz1 · Answer

no dont count repeats soo its 1/10 youre welcome

lacris · Answer

was i supposed to also add repeats in simple random sampling?

lacris · Answer

wait is it really 1/10?

mazmaz1 · Answer

1 in 10 chance of bob and pat being together

lacris · Answer

Is there a quicker way to find it? Besides writing it out? like with combinations or something?

mazmaz1 · Answer

wel you just say the first name wi the rest is 54 next name in 3 so you just do 4+3+2+1=10 and one of them if bob and pat

lacris · Answer

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