2. In 200 tosses of a coin, it was observed that 115 Heads and
85 Tails appeared. Test whether this is a fair coin at the = 0.05
level and at the = 0.01 levels.
Consider independent trials of flipping fair coins (outcomes are
heads or tails). Define the random variable T to be the first time
that two heads come up in a row (so, for the outcome HT HT HH... we
have T = 6).
(a) Compute P(T = i) for i = 1, 2, 3, 4, 5.
(b) Compute P(T = n) for n > 5.
1) Define a random variable in words. (e.g. X = number of
heads observed)
2) Specify the distribution of the random variable including
identifying the value(s) of any
parameter(s). (e.g. X ∼ Binomial(10.5))
3) State the desired probability in terms of your random
variable (e.g. P(X < 3)).
4) Calculate the desired probability (e.g. P(X < 3) =
.055).
[Note: You may need more than 1 random variable per
question.]
1. If the amount of time a lightbulb lasts in...
Game theory: Consider a sealed-bid auction in which the winning
bidder pays the average of the two highest bids. Assume that
players have valuations v1 > v2 > …
> vn, that ties are won by the tied player with the
highest valuation, and that each player’s valuation is common
knowledge.
a. Is there any Nash equilibrium in which the two highest bids
are different? If there is, give an example. If there is not, prove
that no such equilibrium...