1 .
You flip a fair coin 7 times; these coin flips are independent of each other. Define the random
variables
- X = the number of heads in these 7 coin flips,
- Y = the number of tails in these 7 coin flips.
(a)
The random variables $X$ and $Y$ are independent.
(b)
The random variables $X$ and $Y$ are not independent.
(c)
None of the above.