Tuesday

July 29, 2014

July 29, 2014

Number of results: 20,317

**Math**

What is the probability of obtaining at least one tail when a coin is flipped six times?
*December 12, 2008 by James*

**probability**

Suppose an unfair coin comes up heads 52.2% of the time if it is flipped. If the coin is flipped 26 times, what is the probability that: a) it comes up tails exactly 12 times? b) it comes up heads more than 22 times?
*March 21, 2012 by Sam*

**statistics**

air coin is flipped 20 times. a. Determine the probability that the coin comes up tails exactly 15 times. b. Find the probability that the coin comes up tails at least 15 times. c. Find the mean and standard deviation for the random variable X giving the number of tails in ...
*September 23, 2013 by nneamaka*

**Probability **

Suppose that an unfair coin comes up heads 54.1% of the time. The coin is flipped a total of 13 times. a) What is the probability that you get exactly 6 heads? b) What is the probability that you get exactly 6 tails? c) What is the probability that you get at most 9 tails?
*February 24, 2012 by Vikki*

** Math**

A coin is loaded in such way that a tail is three times as likely to occur as a head. If the coin is flipped twice. Find the probability that two heads occur
*November 1, 2013 by Elizabeth*

**Math**

A coin is loaded in such way that a tail is three times as likely to occur as a head. If the coin is flipped twice. Find the probability that two heads occur
*November 1, 2013 by Elizabeth*

**Math**

A coin is loaded in such way that a tail is three times as likely to occur as a head. If the coin is flipped twice. Find the probability that two heads occur
*November 2, 2013 by Elizabeth*

**Probability**

Find the probability of obtaining between 50 and 55 tails inclusive when a fair coin is flipped 80 times. (answer accurate to four decimal places.)
*November 22, 2009 by Anna*

**finite**

Assume that the coin is flipped 10 times. What is the probability that both heads and tails occur?
*February 19, 2012 by victoria*

**math**

Assume that the coin is flipped 10 times. What is the probability that both heads and tails occur?
*February 20, 2012 by victoria*

**math**

Carolyn tested a coin to see if it was evenly weighted. She flipped the coin 100 times and came up with 42 heads and 58 tails. How does the relative frequency of tails to heads compare to the probability of tails in this experiment? A. The relative frequency is the same as the...
*June 8, 2013 by bubbie*

**math $$**

ty sooooo much another question (sorry about all these just trying to get this done and learn it before tom.) Jennie calculated the probabilities of various events involving a coin. What is the probability of a coin landing on heads at least twice when the coin is flipped ...
*February 21, 2013 by Angie *

**MATH**

an unfair coin with pr[tails]= .15 is flipped 6 times. what is the probability of getting EXACTLY 1 tail in the 6 flips?
*October 18, 2012 by Anonymous*

**math**

a girl flipped a coin 4 times, what is the probability that she gets 3 heads and 1 tails? Using a tree diagram
*March 7, 2010 by Kevin*

**Finite! please help**

an unfair coin with pr[tails]= .15 is flipped 6 times. what is the probability of getting AT LEAST 1 tail in the 6 flips?
*October 18, 2012 by Anonymous*

**math**

an unbiased coin is tossed six times. find the probability of the given event. the coin lands heads more than once.
*April 23, 2014 by Dee*

**math**

an unbiased coin is tossed six times. find the probability of the given event - the coin lands heads more than once.
*April 25, 2014 by Daren*

**Math**

Would you be more likely to get at least 70% tails if you flip a fair coin 10 times or if you flip a fair coin 1000 times? A) You would be more likely to get at least 70% tails if you flip a fair coin 10 times than if you flip a fair coin 1000 times. B) The probability of ...
*April 4, 2010 by Nicole*

**Statistics**

A coin was flipped 60 times and came up heads 38 times. (a)at the .10 level of significance, is the coin biased towards heads? Show your decision rule and calculations. (b) calculate a p-value and interpret it.
*June 8, 2008 by Gayla*

**Statistics**

A coin was flipped 60 times and came up heads 38 times. (a) At the .10 level of significance, is the coin biased toward heads? Show your decision rule and calculations. (b) Calculate a p-value and interpret it
*June 6, 2010 by Robert*

**Word Problem**

A coin was flipped 60 times and came up heads 38 times. (a) At the .10 level of significance, is the coin biased toward heads? Show your decision rule and calculations. (b) Calculate a p-value and interpret it.
*September 28, 2008 by Marilyn*

**TEST TOMM. NEED HELP IMMEDIATELY. PROBABILITY**

A fair coin is tossed ten times in a row. What is the probability that "heads" comes up at least eight times? I got an answer of 7/128, but I lost the paper with the work I showed. Can someone refresh my memory please?
*May 21, 2008 by Tom*

**statistics**

A coin was flipped 60 times and came up heads 38 times. (a) At the .10 level of significance, is the coin biased toward heads? Show your decision rule and calculations. I need more than the answer. I'm looking for help on the steps to get to the answer, please. Thanks
*December 1, 2011 by Laura*

**Math**

Someone tossed a coin 80 times.The coin landed on heads 60 times. Is the experimental probability greater than or less than theoretical probability?
*March 19, 2013 by Taya*

**Geometry**

A fair coin is flipped 3 times. The probability of getting exactly two heads, given that at least one flip results in a head, can be written as ab, where a and b are coprime positive integers. What is the value of a+b?
*June 10, 2013 by Abhishek Ranjan*

**math**

A fair coin is flipped 3 times. The probability of getting exactly two heads, given that at least one flip results in a head, can be written as a/b, where a and b are coprime positive integers. What is the value of a+b?
*June 11, 2013 by raja harishchandra*

**math**

A fair coin is flipped 3 times. The probability of getting exactly two heads, given that at least one flip results in a head, can be written as a/b, where a and b are coprime positive integers. What is the value of a+b?
*June 12, 2013 by raja harishchandra*

**math**

A fair coin is flipped 3 times. The probability of getting exactly two heads, given that at least one flip results in a head, can be written as a/b, where a and b are coprime positive integers. What is the value of a+b?
*June 13, 2013 by raja harishchandra*

**algebra I**

If you toss a coin, the probability of gettig heads is 1/2. If you toss a coin 2 times. the probability of getting heds each time is 1/2*1/2 or (1/2)^2. -Write an expression to represent the probability of tossing a coin 'n' times and getting 'n' heads. -Express your answer to...
*February 7, 2008 by Joanne*

**math**

Six fair coins are flipped, the probability that exactly three coins turns up heads is T. If the coins are flipped again, the probability that exactly 16T coins turns up heads is S. If the six coins are flipped again, the probability that exactly 32S coins turns up heads is Q...
*November 7, 2010 by zid*

**math**

Kalil flipped a coin sixty times. He got thirty-four heads. How does this result compare to the number of heads you would have expected based on theoretical probability?
*July 18, 2013 by zach*

**math**

In a game, a player tosses a coin 4 times. If the player gets 3 or 4 heads, he/she wins. What is the theoretical probability of winning this game? I just need to know the outcomes. I don't know how to get them. Please and Thank you. Coin 1: 50% Heads Coin 2: 50% Heads Coin 3: ...
*May 30, 2007 by Angela*

**math**

a fair coin is flipped 5 times the random variable is x is defined to be the number of heads that are observed identify the probability mass function of the random variable x. x P(x)
*October 3, 2012 by virginia*

**probability**

John has 3 unique coins such that the probability of obtaining a head when the coin is flipped is 1/10, 2/10 and 3/10, respectively. If he flips each of the 3 coins once, the probability that at least 1 heads appears is p. What is the value of 1000p?
*February 10, 2013 by john*

**math**

John will toss a coin three times. What is the probability that the coin will land heads up all three times? express the probability ratio as a fraction and as a decimal
*March 30, 2011 by jill*

**probability**

John has 3 unique coins such that the probability of obtaining a head when the coin is flipped is 110, 210 and 310, respectively. If he flips each of the 3 coins once, the probability that at least 1 heads appears is p. What is the value of 1000p?
*February 10, 2013 by john*

**Math Problem ( 6th grade math)**

Brandon tosses a coin 500 times. The coin lands on tails 320 times. A: What is the experamental probability of getting heads? B: Is the coin fair or unfair? Explain you answer.
*May 16, 2012 by Anna*

**Math**

A spinner with 10 equal sections, numbered 1 to 10, is spun. Then a coin is flipped. What is the probability that the spinner will land on 3 and the coin will land on heads?
*June 16, 2014 by Maddi*

**Finite Math**

A coin is loaded, so that the probability of a head occuring on a single toss is 2/3. In six tosses of the coin, what is the probability of getting all heads or all tails?
*September 27, 2012 by Carol*

**math**

1. An architect draws house plans for a client using the scale 1in= 4ft. How long shall the architect draw a wall that will be 22ft long Ans 5 1/2 in 2. If a coin is flipped 5 times, the probability of getting heads all 5 times is Ans 1/32 3. a bag of marbles contains 4 red, 3...
*June 19, 2014 by need help*

**math**

1. An architect draws house plans for a client using the scale 1in= 4ft. How long shall the architect draw a wall that will be 22ft long Ans 5 1/2 in 2. If a coin is flipped 5 times, the probability of getting heads all 5 times is Ans 1/32 3. a bag of marbles contains 4 red, 3...
*June 19, 2014 by need help*

**Intro to Probability, please check my work.**

A fair coin is flipped three times. You win $5 every time the outcome is heads. Let the random variable X represent the total number of dollars you win. (a) List the sample space. (b) Determine the probability function of X. ====================== Answer: a) 2^3= 8 ...
*February 17, 2008 by Amelie*

**Probability**

Toss a fair coin ten times. Find the probabiltiy of getting heads at least once. Can anyone help me to see how this works out?
*September 6, 2010 by Diane*

**math**

John has 3 unique coins such that the probability of obtaining a head when the coin is flipped is 1/10, 2/10 and 3/10, respectively. If he flips each of the 3 coins once, the probability that at least 1 heads appears is p. What is the value of 1000p?
*February 7, 2013 by lasnikha*

**math**

An experiment consists of flipping a coin 3 times and noting the number of times that a heads is flipped. Find the sample space S of this experiment. S=?
*September 7, 2010 by Amber*

**Probability**

* I have a question. The sentence below says, "A PENNY, a NICKEL, and a DIME are flipped....." Does this go in order? That is,.....for example: (H,T,H)The first H is for PENNY, the T is for NICKEL, and the last H is for DIME? A penny, a nickel, and a dime are flipped at the ...
*February 15, 2014 by Anonymous*

**maths-urgent**

a man has 3 unique coins such that the probability of obtaining a head when the coin is flipped is 1 10 , 2 10 and 3 10 , respectively. If he flips each of the 3 coins once, the probability that at least 1 heads appears is p . What is the value of 1000 p ?
*February 10, 2013 by Anonymous*

**Statistics**

Suppose Tori has an unfair coin which lands on Tails with probability 0.28 when flipped. If she flips the coin 10 times, find each of the following: Question 5 options: P(No more than 3 Tails) P(Exactly 1 Tail) P(At least 5 Tails) P(Less than or equal to 2 Tails) P(At least 1...
*June 2, 2013 by Anonymous*

**mathematics**

John has 3 unique coins such that the probability of obtaining a head when the coin is flipped is 110, 210 and 310, respectively. If he flips each of the 3 coins once, the probability that at least 1 heads appears is p. What is the value of 1000p?
*February 6, 2013 by amartya*

**Math**

Flip a fair coin 9 times. Find the probability of getting the following outcome. (Round your answer to six decimal places.) at least 5 heads
*October 9, 2011 by Marisa*

**Finite**

Assume that the coin is weighted so that Pr[H] = [ 1/11], and that it is flipped 9 times. The random variable X is defined as the number of heads in the 9 flips. What is E[X]?
*October 8, 2012 by Sam*

**math**

I flipped a coin 25 times. So since I got heads 15 times, does that mean that the percent of times i got heads is 60%? Yes or no
*July 28, 2013 by Anonymous*

**Probability**

What is the probability of flipping a coin two times and getting no heads? If I flip a coin twice and get no heads wouldn't it be 2/2 or 1?
*April 28, 2010 by bwb*

**Stat. **

A trick coin has been weighted so that heads occurs with a probability of p 2 3, and p(tails) 1 3. If you toss this coin 72 times, a. How many heads would you expect to get on average? b. What is the probability of getting more than 50 heads? c. What is the probability...
*January 27, 2013 by Nickie*

**Math**

An unfair coin with Pr[H]=0.25 is flipped 95 times. A random variable X is defined as the number of heads that occur. Find the standard deviation. Any help??
*April 2, 2012 by Tiffany*

**Algebra/Probability**

Suppose that you toss a coin and roll a die. What is the probability of obtaining tails or a six? (Enter the probability as a fraction.) I came up with 1/6 which does not sound right thank you for you time on this Holiday
*May 26, 2014 by Mary Ann *

**math Study guide**

1. The table shows the results of spinning a four-colored spinner 50 times. Find the experimental probability and express it as a decimal. P(not red) = ? (1 point) a 0.6 b 0.4 c 0.2 d 0.3 2. You roll a number cube 20 times. The number 4 is rolled 8 times. What is the ...
*June 6, 2014 by DragonBornFU5R0D48*

**funny question**

in a circular road there is a fixed point from which two buses move in clockwise and anticlockwise. in every after 20 mins there is a bus moving in either direction.a man came to the point randomly and picked up the bus that came first.he came ten times in ten days and out of ...
*June 28, 2006 by trakib*

**probability**

if a fair coin is tossed 4 times, what is the probability of getting heads the first 3 times, and tails the fourth itme?
*May 10, 2011 by kristy*

**Statistics**

You are shown a coin that its owner says is fair in the sense that it will produce the same number of heads and tails when flipped a very large number of times. Suppose you decide to flip a coin 100 times. a. What conclusion would you be likely to draw if you observed 95 heads...
*September 19, 2010 by Rhea*

**math**

an unbiased coin is tossed 3 times. find the probability that the coin lands heads exactly once.
*February 27, 2011 by Anonymous*

**mat**

Marcus flips a coin and tosses a six-sided die with the sides numbered 1 through 6. What is the probability that he gets a head on the coin and a number divisible by 3 on the die
*April 27, 2011 by Lo*

**Math**

"The probability of getting heads on a biased coin is 1/3. Sammy tosses the coin 3 times. Find the probability of getting two heads and one tail". I thought that all you have to do is: (1/3)(1/3)(2/3) It makes sense to me, but it's not right...
*May 3, 2010 by Stuck*

**Math**

Len flipped a coin 3 times and got a head each time. What are the chances he will get a tail on his next toss? Explain reasoning. would it be 50/50 because there are two sides
*March 21, 2011 by Todd*

**probability **

Rosencrantz and Guildenstern In the opening scene of Tom Stoppard's play Rosencrantz and Guildenstern Are Dead, about two Elizabethan contemporaries of Hamlet, Guildenstern flips a coin 91 times and gets a head each time. Suppose the coin was balanced. a. Specify the sample ...
*October 19, 2013 by vv*

**Probability **

Rosencrantz and Guildenstern In the opening scene of Tom Stoppard's play Rosencrantz and Guildenstern Are Dead, about two Elizabethan contemporaries of Hamlet, Guildenstern flips a coin 91 times and gets a head each time. Suppose the coin was balanced. a. Specify the sample ...
*October 19, 2013 by vv*

**Discrete Math**

What is the probability that a fair coin lands Heads 4 times out of 5 flips? Out of bit strings of length ten, what is the probability that the bit string begins and ends with 0? What if the bit string has more 0s than 1s? and, what if the bit string has the sum of its digits ...
*October 30, 2011 by Tommy*

**math Study guide 3**

1. The table shows the results of spinning a four-colored spinner 50 times. Find the experimental probability and express it as a decimal. P(not red) = ? red | blue | green | yellow ----------------------------------------- 20 | 10 | 9 | 11 (1 point) a 0.6 b 0.4 c 0.2 <...
*June 6, 2014 by DragonBornFU5R0D48*

**check my work MATH**

1. The table shows the results of spinning a four-colored spinner 50 times. Find the experimental probability and express it as a decimal. P(not red) = ? red | blue | green | yellow ---------------------------------------- 20 | 10 | 9 | 11 (1 point) a 0.6 b 0.4 c 0.2 <...
*June 6, 2014 by DragonBornFU5R0D48*

**math**

A number cube is rolled and a coin is flipped. Predict how many times you would get heads and a number less than 3 in 240 trials. 60 40 30 20
*November 2, 2012 by sakiera*

**math study guide**

1. The table shows the results of spinning a four-colored spinner 50 times. Find the experimental probability and express it as a decimal. P(not red) = ? (1 point) a 0.6 b 0.4 c 0.2 d 0.3 2. You roll a number cube 20 times. The number 4 is rolled 8 times. What is the ...
*June 6, 2014 by DragonBornFU5R0D48*

**Math**

Suppose Kalvin flipped a coin to determine his breakfast cereal every day starting on his 12th birthday and continuing until his 18th birthday. How many times would you expect him to eat Cocoablast cereal. I know 6 years times 365 days is 2190 what do I do next
*March 21, 2011 by Mark*

**Math**

Meg flipped a penny 2 times. What is the probability she get 2 heads?
*April 19, 2012 by Jim*

**Math**

Luis has a coin that is weighted so that the probability that Heads appears when it is tossed is 0.55. Suppose that the coin is tossed 3 times. What is the probability that all 3 tosses are Heads? please help ,e to solve this question . i dont'know if i +am right .55/2+.55/2+....
*February 17, 2012 by sajid*

**math**

1. what is the probability of getting exactly one heads from three coin tosses? is the answer 1/8? 2. what is the probability that a fair coin will land heads up three times in a row? is the answer 3/2?
*August 4, 2009 by jakkie j*

**statistics**

meg flipped a penny 3 times. what is the probability the results were 3 tails.
*November 3, 2010 by Anonymous*

**statistics**

you and 50 coworkers decide to play a game that consists of flipping a coin once for each coworker. If the flip coin for the particular coworker results in a head, you have to pay them $1. If it results in tail, neither party has to pay anything. Given the information provided...
*March 25, 2011 by leshonda*

**math**

Please check my answers Would you be more likely to get at least 70% tails if you flip a fair coin 10 times or if you flip a fair coin 1000 times? same Consider a bowl containing 36 different slips of paper. Ten of the slips of paper each contain one of the digits from the ...
*March 29, 2011 by anonymous*

**math**

mike claims that the probability of winning a pick 6 number game where six numbers are drawn from the set 1 through 49 is about the same as getting 24 heads in a row when you flip a fair coin 1. find the probability of winning the pick 6 game and the probability of getting 24 ...
*May 17, 2010 by Sara!*

**math**

a fair coin is tossed in the air 4 times. if the coin lands heads up the first three tosses, what is the probability the coin will land heads up the fourth toss? I think it is 1/2 because the coin has 2 sides and 50% it will land on heads. My friend thinks it is 1/16, since ...
*May 12, 2013 by Ellie*

**MATH**

1. The table shows the results of spinning a four-colored spinner 50 times. Find the experimental probability and express it as a decimal. P(not red) = ? red | blue | green | yellow ---------------------------------------- 20 | 10 | 9 | 11 (1 point) a 0.6 b 0.4 c 0.2 <...
*June 7, 2014 by Anonymous*

**probability**

a spinner has 5 sections and is spun 40 times. it lands on 2 six times. What is probability of spinning a 2?
*May 20, 2013 by Sam*

**stor**

Suppose that you flip a fair coin (P(H)=P(T)=1 2 ) three times and you record if it landed on heads, H, or tails, T. (a) What is the sample space of this experiment? What is the probability of each event? (b) [1 pt] Let X be the number of times that you observe heads. What ...
*September 29, 2012 by ami*

**Probability**

A coin is tossed 6 times. what is the probability of getting at least two heads?
*September 1, 2011 by FAKAAPO*

**Probability**

A coin is tossed 3 times. What is the probability of getting 2 heads and 1 tail?
*February 18, 2011 by Elizabeth*

**Probability**

You and a friend play the following game: You pay your friend $3 each turn and then flip a fair coin. It it’s tails, your friend pays you $(2^n), where n is the number of times you’ve flipped the coin, and the game ends. If it’s heads, you have the choice of stopping and ...
*June 29, 2007 by Beena*

**math **

What is the probability of flipping a coin two times and getting no heads? Would that be 1/2x1/2=1 so the probability is 1%?
*November 22, 2010 by m*

**math of investment**

Suppose the probability of a coin coming up heads is 2/5. The coin is tossed 4 times (the tosses are independent), and Jane will win $5 for each head. If all 4 tosses are heads, she will get $100 extra. She never loses money. a)what is the probability that Jane will win at ...
*March 20, 2010 by Anonymous*

**math (statistics)**

an experiment consistbnof tossing a die and then flipping a coin once if the number on the die is even. If the number on the die is odd, the coin is flipped twice. Using the notation 4H, for example to denote an event that die comes up 4 and then the coin comes up heads, and ...
*August 25, 2012 by Anonymous*

**Probability **

A nickel is flipped and a dime is flipped. 1. What is the probability of obtaining exactly one head? A bag contains five balls numbered 0 through 4. Two balls are chosen at random in succession. The first ball is replaced before the second is chosen. 1. What is the probability...
*February 7, 2013 by Kyle*

**math Study guide updated answers check**

1. The table shows the results of spinning a four-colored spinner 50 times. Find the experimental probability and express it as a decimal. P(not red) = ? red | blue | green | yellow ---------------------------------------- 20 | 10 | 9 | 11 (1 point) a 0.6 b 0.4 c 0.2 <...
*June 6, 2014 by DragonBornFU5R0D48*

**math**

you toss a coin 3 times. what is the probability that you get heads 0 times. is it 1/6 or 1/8
*February 25, 2013 by Anonymous*

**algebra 1**

you toss a coin 3 times. what is the probability that you get heads 0 times. is it 1/6 or 1/8
*February 25, 2013 by Anonymous*

**Math**

10. A coin is loaded so that the probability of heads is 0.55 and the probability of tails is 0.45, Suppose the coin is tossed twice and the results of tosses are independent. a.What is the probability of obtaining exactly two heads? b.What is the probability of obtaining no ...
*March 2, 2014 by Renee*

**Probability**

A coin is tossed 7 times. What is the probability of getting four heads. My teacher said that there is a formula involved but i don't know which one. How do i set it up?
*November 19, 2009 by nick*

**math-probability**

A student claims that if a fair coin is tossed and comes up heads 5 times in a row, then, according to the law of averages, the probability of tails on the next toss is greater than the probability of heads. What is your reply?
*April 19, 2010 by jennifer*

**stat probability**

A coin is tossed 4 times. Find the probability that the 4th toss is a tail, given that the first 3 tosses were all heads.
*April 8, 2013 by Lynn*

**Math**

Before a football game, a coin toss is used to determine which team will kick off. The height h (in feet) of a coin above the ground t seconds after being flipped up into the air is given by the following equation. h = -16t2 + 34t + 15. How long does a team captain have to ...
*September 28, 2012 by Mark*

**Math**

A spinner with three equal spaces (labeled A,B, and C) is spun. If the spinner lands on A or C a coin is flipped. If the spinner lands on B a standard 6-sided dice is rolled. What is the probability of spinning a B and rolling a prime?
*June 5, 2013 by Jennyy*

**Math**

A spinner with three equal spaces (labeled A,B, and C) is spun. If the spinner lands on A or C a coin is flipped. If the spinner lands on B a standard 6-sided dice is rolled. What is the probability of spinning a B and rolling a prime?
*June 5, 2013 by Jennyy*

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