Steve
Questions
Newest questions posted by Steve

A biased coin lands heads with probabilty 2/3. The coin is tossed 3 times a) Given that there was at least one head in the three tosses, what is the probability that there were at least two heads? b) use your answer in a) to find the probability that there

prove that (n choose k) = (n1 choose k1) (n1 choose k) a) By using formula of (n choose k) b) by breaking subsets of size k into two mutually exclusive classes, one class comprising all those subsets which contain a given element and the other all those

prove (n choose k) = (n choose nk)

A biased coin lands heads with probabilty 2/3. The coin is tossed 3 times a) Given that there was at least one head in the three tosses, what is the probability that there were at least two heads? b) use your answer in a) to find the probability that there

A biased coin lands heads with probabilty 2/3. The coin is tossed 3 times a) Given that there was at least one head in the three tosses, what is the probability that there were at least two heads? b) use your answer in a) to find the probability that there
Responses
Newest responses posted by Steve

Hard? Not so. If y = 2x^24x then what is y when x=5? Just replace all the x's with 5's and you have y = 2*5^2  4*5 = 30

30tons/day * 2000lb/ton * 1day/24hr * 1hr/60min = 125/3 lb/min see how the units cancel out.

yes

(x^25x)^236 = (x^25x)^2  6^2 recall that a^2b^2 = (a+b)(ab). so, now you have = (x^25x+6)(x^25x6) = (x3)(x2)(x6)(x+1)

only if ab=0 since (ab)^2 = a^22ab+b^2 so, 2ab = a^2+b^2