Two coins with heads probabilities 1/3 and 1/4 are alternately tossed, starting with the 1/3 coin,...
Two coins with heads probabilities 1/3 and 1/4 are alternately tossed, starting with the 1/3 coin, until one of them turns up heads. Let ? denote the total number of tosses, including the last. Find:
P(X=even)
?(?).
I know the answer, but can anyone give me some explanation, not just the answer?
Homework Answers
Add Answer to:
Two coins with heads probabilities 1/3 and 1/4 are alternately
tossed, starting with the 1/3 coin,...
a fair coin is tossed until either a head turns up or 3 tosses are made....
a fair coin is tossed until either a head turns up or 3 tosses are made. let x be no of heads which occur and let y be no of tails. find expected value and variance of x and y
The probability of getting 2 heads and 1 tail when three coins are tossed is 3 in 8
The probability of getting 2 heads and 1 tail when three coins are tossed is 3 in 8. Find the odds of not getting 2 heads and 1 tail. ANSWER: 5:8?Three Coins are tossed. Find the probability that exactly 2 coins show heads if the first coin shows heads.?ANSWERS: Could it be 1/4?
A box contains five coins. For each coin there is a different probability that a head...
A box contains five coins. For each coin there is a different probability that a head will be obtained when the coin is tossed. (Some of the coins are not fair coins!) Let pi denote the probability of a head when the i th coin is tossed (i = 1, . . . , 5), and suppose that p1 = 0, p2 =1/4, p3 =1/2, p4 =3/4, p5 =1. The experiment we are interested in consists in selecting at random...
Alice has two coins. The probability of Heads for the first coin is 1/4, and the...
Alice has two coins. The probability of Heads for the first coin is 1/4, and the probability of Heads for the second is 3/4. Other than this difference, the coins are indistinguishable. Alice chooses one of the coins at random and sends it to Bob. The random selection used by Alice to pick the coin to send to Bob is such that the first coin has a probability p of being selected. Assume that 0<p<1. Bob tries to guess which...
3. A coin is tossed, what is the probability that two consecutive heads or two consecutive...
3. A coin is tossed, what is the probability that two consecutive heads or two consecutive tails occur in at most four tosses? Draw a tree diagram first. (6 points)
5. (15 pts) a) A coin is tossed 5 times. Let X be the number of...
5. (15 pts) a) A coin is tossed 5 times. Let X be the number of Heads on the first 4 tosses and Y be the number of Heads on the last three tossed. Find the joint probabilities Pij = P(X = 1, Y = j) for all relevant i and j. Find the marginal probabilities pit and p+, for all relevant i and j. b) Find the value of A that would make the function Af(x,y) a PDF. Where...
A biased coin is tossed until a head occurs. If the probability of heads on any...
A biased coin is tossed until a head occurs. If the probability of heads on any given toss is .4, What is the probability that it will take 7 tosses until the first head occurs? The answer i got was , (.60)^2(.40) Now for the second part it says, what is the probability that it will take 9 tosses until the second head occurs. Is the answer for this part be 9C2(.40)^2(.60)^7 or 8C1(.40)(.60)^5 I can't figure out if its...
1. A fair coin is tossed three times. Let A be the event that there are...
1. A fair coin is tossed three times. Let A be the event that there are at least two heads in the three tosses and let B be the event that there are exactly two heads among the three tosses. a. Draw the complete tree diagram for this experiment. [3] b. What are the sample space and probability function for this experiment? [5] c. Compute P(A), P(B), P(A|B), and P(B|A). [7]
1. A fair coin is tossed three times. Let A be the event that there are...
1. A fair coin is tossed three times. Let A be the event that there are at least two heads in the three tosses and let B be the event that there are exactly two heads among the three tosses. a. Draw the complete tree diagram for this experiment. [3] b. What are the sample space and probability function for this experiment? [5] c. Compute P(A), P(B), P(A|B), and P(B|A). [7]
1. You have three different coins where the probabilities of getting heads are 0.5, 0.7, and...
1. You have three different coins where the probabilities of getting heads are 0.5, 0.7, and 0.2 respectively You plan to flip each coin and count the total number of heads. You're curious what the probability of getting exactly two heads is. [1 point a. Explain why you cannot use the Binomial model for this situation. [3 points] b. Show that the probability of getting exactly two heads is 0.38. Define any events you want to use in words. c....
3. A coin is tossed, what is the probability that two consecutive heads or two consecutive tails occur in at most four tosses? Draw a tree diagram first. (6 points)
5. (15 pts) a) A coin is tossed 5 times. Let X be the number of Heads on the first 4 tosses and Y be the number of Heads on the last three tossed. Find the joint probabilities Pij = P(X = 1, Y = j) for all relevant i and j. Find the marginal probabilities pit and p+, for all relevant i and j. b) Find the value of A that would make the function Af(x,y) a PDF. Where...
1. A fair coin is tossed three times. Let A be the event that there are at least two heads in the three tosses and let B be the event that there are exactly two heads among the three tosses. a. Draw the complete tree diagram for this experiment. [3] b. What are the sample space and probability function for this experiment? [5] c. Compute P(A), P(B), P(A|B), and P(B|A). [7]
1. A fair coin is tossed three times. Let A be the event that there are at least two heads in the three tosses and let B be the event that there are exactly two heads among the three tosses. a. Draw the complete tree diagram for this experiment. [3] b. What are the sample space and probability function for this experiment? [5] c. Compute P(A), P(B), P(A|B), and P(B|A). [7]
1. You have three different coins where the probabilities of getting heads are 0.5, 0.7, and 0.2 respectively You plan to flip each coin and count the total number of heads. You're curious what the probability of getting exactly two heads is. [1 point a. Explain why you cannot use the Binomial model for this situation. [3 points] b. Show that the probability of getting exactly two heads is 0.38. Define any events you want to use in words. c....
Most questions answered within 3 hours.
-
The area of an elastic circular loop decreases at a constant
rate, dA/dt = −6.60×10−3 m2/s...
asked 2 minutes ago -
The denaturation of proteins can be described by the
equilibrium
F⇌U
where F and U represent...
asked 1 hour ago -
Please answer what the maximum and minimum force is, and the
angle on the ion is...
asked 1 hour ago -
implement a program that reads a number of rows and a symbol.
The program will draw...
asked 1 hour ago -
Assume that when adults with smartphones are randomly selected,
45% use them in meetings or classes....
asked 1 hour ago -
Determine the number of formula units of
Na2SO4 and moles of oxygen contained in 8.11
moles...
asked 1 hour ago -
Explain in steps on the following code
What would be the output when executed
using System;...
asked 2 hours ago -
Given the information in the table, which of the following
statements is CORRECT?
Stock A
Stock...
asked 2 hours ago -
Write MARIE assembly language programs that do the following:
Write a program that inputs an integer...
asked 2 hours ago -
Explain an understanding of services and protocols.
Explain the job of DNS.
Explain the three email...
asked 2 hours ago -
(As soon as possible) Balance each of the following equations
according to the half-reaction method:
H2O2(aq)...
asked 2 hours ago -
A thin rod with a mass of 3.5kg and a length L=1.5 m is oriented
horizontally....
asked 2 hours ago