Posted by tms on .
In surveys about sensitive topics, respondents are sometimes given ways to “hide” their answers from the surveyor. In a survey of taxpayers, one of the questions is, “Did you cheat on your taxes?” To answer, the respondent is asked to toss a coin. If it lands heads, the respondent must answer “yes.” If it lands tails, the respondent must answer the question truthfully, either “yes” or “no” (the answer has to be the one that is true). Assume that all respondents follow this procedure, and that for 10% of the respondents the truthful answer is “yes.” Also assume that the result of a respondent’s coin toss is independent of whether or not the respondent cheated on his/her taxes.
One of the respondents is picked at random.
1)Given that the respondent cheated on his/her taxes, what is the chance that he/she answered “yes”?
2)Given that the respondent did not cheat on his/her taxes, what is the chance that he/she answered “yes”?
3)Given that the respondent answered “yes,” what is the chance that the respondent cheated on his/her taxes?

math 
trolololo,
1) 1.
2) 0.5
3) o.6 
math 
khaqan,
the third answer seems to be wrong

math 
Raja,
Third one is wrong.!!
right answer???? 
math 
seriously,
Third one? 0

math 
Anonymous,
Nope, it is not 0

math 
IsaMad,
Third 0 is wrong!

math 
Kala,
Third one is 0.5741

math 
Dave,
0.5741 are wrong

math 
Anonymous,
Can somebody put right answer for this?????

math 
jana,
third one is 0.55

math 
Anonymous,
what is the ans.of C???

math 
Anonymous,
0.55 is the wrong answer.!!

math 
Anonymous,
please answer C part
and answer of
A die has 2 red faces, 2 blue faces, and 2 green faces. It is rolled 240 times. Let R be the number of times red faces appear, and B the number of times blue faces appear.
Consider the random variable D = R  B. That’s D for “difference.” If all 240 rolls show blue faces, then D = 240; if they all show red faces, then D = 240; otherwise D is somewhere in between. The random variable D is the sum of 240 draws at random with replacement from
are correct]
red, red, blue, blue, green, green red, red, blue, blue, 0, 0
1, 0, 0, 0, 0, 0
1, 1, 0, 0, 0, 0
1, 0, 0
0, 1, 0
1, 1, 0, 0, 0, 0
1, 1, 1, 1, 0, 0
1, 1, 0
The random variable R is the sum of 240
draws at random with replacement from
red, red, blue, blue, green, green
red, 0, 0
1, 0, 0, 0, 0, 0
1, 1, 0, 0, 0, 0
1, 0, 0
0, 1, 0
1, 1, 0, 0, 0, 0
1, 1, 1, 1, 0, 0
1, 1, 0
Find SE(D) 
math 
Anonymous,
please answer today last day

math 
joane,
C 0.65

math 
subhash,
comon guys help this brother out

math 
Anonymous,
a) 1 1 0 0 0 0
10 0
010
b)1 1 1 1 0 0
1 1 0
se(d) 12.6491 
math 
subhash,
thanks Anonymous i done that i need the answer to the first problem part C

math 
KO,
TRY 0.078

math 
subhash,
NO ITS WRONG PLZ COMON GUYS

math 
Guess,
0.5455

math 
PK,
0.1818

math 
HS,
which one is wrong? 0.5455 or 0.1818? Let me try the other one.

math 
me,
0.5455 is wrong

math 
BOG,
0.1818 because
1) (0.05+0.05)/0.55=0.181818
we should remember THAT in first case "eagle" taxcheaters ALSO INCLUDED! 
math 
Dave,
0.1818 is the correct one