SOLUTION: An unbalanced coin shows heads 55% of the time.
(a) If the coin is tossed 12 times, what is the probability of heads on all tosses?
(b) Find the probability of at
Algebra.Com
Question 1032434: An unbalanced coin shows heads 55% of the time.
(a) If the coin is tossed 12 times, what is the probability of heads on all tosses?
(b) Find the probability of at least one head in 12 tosses.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
An unbalanced coin shows heads 55% of the time.
(a) If the coin is tossed 12 times, what is the probability of heads on all tosses?
P(all heads) = 0.55^12 = 0.000766
---------------------
(b) Find the probability of at least one head in 12 tosses.
P(1<= x <=12) = 1 - P(x = 0) = 1 - 0.45^12 = 0.00003
-------------
Cheers,
Stan H.
-----------
RELATED QUESTIONS
a fair coin was tossed 9 times and the coin landed on heads 7 times and tails twice. if... (answered by ikleyn)
What is the probability of getting 2 heads if a coin is tossed 3... (answered by stanbon)
what is the probability of obtaining either 2 heads or 4 heads if a fair coin is tossed 5 (answered by stanbon)
A certain unfair coin lands on heads 1/3 of the time. The coin is tossed 5 times. Finds... (answered by swincher4391)
A fair coin is tossed 12 times, each time coming up heads. On the next coin toss, what is (answered by ikleyn)
An unfair coin has a probability 0.6 of landing heads. The coin is tossed four times.... (answered by jim_thompson5910)
If a coin is tossed 7 times what is the probability that the coin will land on heads 5... (answered by robertb)
A coin is tossed three times. Let Z denote the number of heads on the first toss and W... (answered by ikleyn)
A coin is tossed three times. Let Z denote the number of heads on the first toss and W... (answered by ikleyn)