Question

In a vote,

1 = FOR, 2 = AGAINST.

Estimate the probability that it would the vote passes.

1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1; (12) votes

2, 2, 2, 2, 2, 2, 2, 2; (8) votes

A) 0.6
B) 0.5
C) 0.65
D) 0.4

Answer 1

A!

Answer 2

60% of 20 is 12. :)

Answer 3

yeah, i see that now that I formated it all like that :)

is there a way to do this with nPr or nCr ?

Answer 4

???? hmm

Answer 5

The way I did it was
% times of = is
% times 20 = 12

12/20 = .6 = 60% :)

Answer 6

I take it back, what's the threshold for the vote to pass. Unanimous,majority?

Answer 7

doesnt say; this is what they gave me in the study guide...

A polling firm, hired to estimate the likelihood of the passage of an up-coming referendum, obtained the set of survey responses to make its estimate. The encoding system for the data is: 1 = FOR, 2 = AGAINST. If the referendum were held today, estimate the probability that it would
pass.

1, 2, 2, 1, 1, 2, 1, 2, 2, 1, 1, 1, 2, 1, 2, 1, 1, 1, 2, 1

Answer 8

A!

Answer 9

and for some reason i was stuck on the track that i needed to figure permutations and combonations..

Answer 10

NOPE!
% times of = is :)

Answer 11

\[\large \frac{20!}{8!12!}\]wasnt cutting the mustard

Answer 12

the vote would pass as long as yay is more than nay

Answer 13

20 votes all together
12 is the most for pass
But what percent of 20 is 12?

So I did
% times of = is
x * 20 = 12

Divided by 20 on both sides!
.6 = 60 %