The probability of rolling a die and getting an even number is 1/2. If you roll the die twice, the probability of getting a even number both times is (1/2)(1/2) or (1/2)^2. Write an expression to represent the probability of

49,723 results
  1. Algebra

    Suppose you roll a red number cube and a yellow number cube. What is the probability of rolling any matching pair of numbers? (Hint: Add the probability of each of the six matches.)

  2. Math

    What is the probability oi rolling a total of 7 in two rolls of a standard die if you get an even number of the first roll? Could someone please help me? Thanks

  3. statistics

    The below table shows the probabilities generated by rolling one die 50 times and noting the up face. What is the probability of getting an odd up face? roll 1 Probability 0.22 roll2 probability 0.10 roll 3 probability 0.18 roll 4 probability 0.12 roll 5

  4. Math

    The table shows the results of rolling a number cube labeled one through six 50 times. Number Rolled Frequency 1 7 2 9 3 11 4 6 5 9 6 8 1. What is the experimental probability of rolling a 3? 0.11 0.22 0.30 ** 0.27 2. Based on the experimental probability,

  5. Geometry

    You roll a six-sided die. Event A: Roll an odd number. Event B: Roll a number less than 5. Find P (A or B) . Express you answer as a fraction in simplest form. Plz help!!

  6. mathematics

    A number cube is labeled with the numbers 1 through 6 . What is the probability of rolling a 1 or a 5 on the first roll?

  7. statistics

    6. You read in a book about bridge that the probability that each of the four players is dealt exactly one ace is about 0.11. This means that A. in every 100 bridge deals, each player has one ace exactly 11 times. B. in one million bridge deals, the number

  8. probability

    Consider n independent rolls of a k-sided fair die with k≥2: the sides of the die are labelled 1,2,…,k and each side has probability 1/k of facing up after a roll. Let the random variable Xi denote the number of rolls that result in side i facing up.

  9. math

    A six-sided, fair number cube is rolled 100 times as part of an experiment. The frequency of the roll of the number 3 is 20. Which statement about rolling a 3 is correct? The theoretical probability is 1/6. The experimental probability is 1/6. The

  10. math

    You roll a standard, six-sided number cube. What is the probability of rolling a prime number or a number greater than 2?

  11. Statistics

    1. A jar contains five blue balls and five red balls. You roll a fair die once. Next you randomly draw (without replacement) as many balls from the jar as the number of points you have rolled with the die. (a) What is the probability that all of the balls

  12. Algebra 2

    What is the theoretical probability of rolling a sum of 6 on one roll of two standard number cubes? A. 1/9 B. 5/36 C. 1/12 D. 1/6

  13. STATISTIC

    A die with 12 sides is rolled. What is the probability of rolling a number less than 11? Is this the same as rolling a total less than 11 with two six-sided dice? Explain. A. 2/6 B. 3/6 C. 4/6 D. 5/6 Please i need help ,my answer is D

  14. statistic

    Roll two 6-sided dice and examine their sum. a) How long will it take to roll "snake-eyes" (a pair of ones)? b) What is the probability of rolling a sum of 7 on the first roll? c) What is the probability of rolling a sum of 7 on the fourth roll? d) What is

  15. math

    What is the probability of rolling a 5 on a 6-sided die? I believe this is 1/6 because there is only one 5 on a 6-sided die. I am stuck on this part of the question: If you roll the die 6 times, how many 5’s do you expect to get? Would you definitely get

  16. Probability

    Consider an experiment in which a fair four-sided die (with faces labeled 0 , 1 , 2 , 3 ) is rolled once to determine how many times a six-sided die (with faces labeled 1 ,.., 6 ) is rolled. The die rolls are independent. Let X be the total number of times

  17. mathematics

    There is an octahedral (8-faces) die whose faces each have one different number from the set {1, 2, 3, 4, 5, 6, 7, 8}. The die is rolled twice, and the number appearing on top after the first roll is multiplied by the number appearing on top after the

  18. Math help

    You roll a standard, six sided number cube. what is the probability of rolling a prime number or a number greater than 2.

  19. Math 221 Week3

    A probability experiment consists of rolling a 6 sided die. Find the probability of the event below: rolling a number less than 3? The probability is

  20. mathematics

    Find the probability of not rolling a number greater than 3 on one die.

  21. Probability

    Single die is rolled one time, find the probability of rolling a number greater than 3 or less than 2?

  22. **************HELP STATISTIC PLEASE*************

    NEED SOMEONE TO RECHECK ANS *****HELP PLEASE HAS STAR BY MY ANSWER If P (A) = 0.2 and P (B) = 0.3 and A and B are disjoint, what is P (A or B)? (1 point) 0.00 0.06 0.10 0.44 *0.50 4. Given that you roll a fair six-sided die, what is the probability that

  23. Probability

    The newest invention of the 6.041x staff is a three-sided die. On any roll of this die, the result is 1 with probability 1/2, 2 with probability 1/4, and 3 with probability 1/4. Consider a sequence of six independent rolls of this die. 1. Find the

  24. Probability

    Roll two fair dice. what is the probability that you get a 2 and a 5 without regard to which is on which die? What is the probability of at least one 2 or one 5? What is the probability of a sum of 7? "what is the probability that you get a 2 and a 5

  25. math

    How do I show probability notation with 2 outcomes? For example, the probability of rolling a 6 on a die is 1/6 because there is one 6 on a die, so P(6) = 1/6. But, how do I show probability notation of rolling both a 2 and a 6? There would be 1 chance of

  26. Math "Need Help Asap"!

    1..)Which of the following are independent pairs of events? Check all that apply. A.Flipping two coins and having one show a head and the other show a head B.Being sneezed on and catching a cold C.When rolling a pair of dice, getting a total of 6 and

  27. math

    If a single die is tossed once, find the probability that you roll an odd number. 3?

  28. Algebra 1

    The probability of rolling a die and getting an even number is 1/2. If you roll the die twice, the probability of getting a even number both times is (1/2)(1/2) or (1/2)^2. Write an expression to represent the probability of rolling the die (d) times and

  29. Math

    A single fair die is tossed find the probability of rolling a number different than 12. Please help me.

  30. math

    You roll a number cube twice. Find the probability of the event. Rolling a number less than 2 and then a number more than 6 Rolling an odd number then an even number Rolling a 7 then a 5

  31. charle drew high

    a number cube is rolled twice. what is the probability of rolling an odd number on the first roll and a multiple of three on the second roll?

  32. math

    you roll a fair number cube twice. what is the probability of rolling two 3's if the first roll is 5

  33. STATISTIC

    A die with 12 sides is rolled. What is the probability of rolling a number less than 11? Is this the same as rolling a total less than 11 with two six-sided dice? Explain. A. 2/6 B. 3/6 C. 4/6 D. 5/6 My answer is d ,is it correct

  34. Math

    What is the probability if getting an odd number when rolling a 6 sided die?

  35. Mathematics

    Find the probability of geeting a number greater than 4 in rolling a die

  36. biology

    One rule of probability can be expressed as the following: The probability of two independent events occurring simultaneously is the product of the probability of their occurring separately. If, for example, you had a pair of dice and rolled each die one

  37. math

    You roll 2 dice. The first die has 26 sides and contains the 26 letters of the English alphabet; the other die has 12 sides and contains numbers 1-12. What is the probability that you will roll a letter with one enclosed area (A, D, O, P, Q, R) and a

  38. algebra 2

    You roll a red die and a green die. Find the probability of rolling a four on the red die and a three on the green die.

  39. math

    Consider the experiment of rolling a single die. What is the probability of rolling a number that is divisible by 2 or 3?

  40. math 3

    Peter is playing a game where a ten-sided die is rolled. Four sides of the die have the number 10, three sides of the die have the number 5, two sides of the die have the number 25, and one side of the die has the number 27. What is the expected value of a

  41. Math

    You roll a fair six-sided die (all 6 of the possible results of a die roll are equally likely) 5 times, independently. Let X be the number of times that the roll results in 2 or 3. Find the numerical values of the following. a) pX(2.5)= b) pX(1)=

  42. Help with math

    I am stuck on a probability question. Please help and tell me the easiest way to find the answer to this.. I am confused and keep getting 5/6 A fair die is rolled..what is the probability of rolling an odd number or a number less than 3? the actual answer

  43. Math

    What is the probability of rolling a number less than 5 on a toss of a twelve-sided die?

  44. Mathematics

    A single die is rolled three times. A success is considered rolling a 6. What is the probability of rolling at least one 6?

  45. math

    find the following probabilities after rolling a single one time. what is the probability of rolling on a 5 on the die?

  46. Math

    if you roll a pair of fair six-sided number cubes, what is the probability of rolling two numbers whose sum is 2?

  47. Math - Statistics

    I roll 12 4-sided dice. What is the probability that I roll at least one 2? What is the probability that I roll exactly three 2s? So i take it, on any give roll, the probability of rolling a 2 is .25 (25%); the probability of rolling something else must be

  48. math

    An experiment consists of rolling a weighted die. The probability of rolling each number is: Pr[1]=0.2 , Pr[2]=0.15 , Pr[3]=0.25 , Pr[4]=0.15 , Pr[5]=0.05 , and Pr[6]=0.2 . On the first roll, you record if the number is Small (1,2) or Large (3,4,5,6). If

  49. Statistics

    You have a fair die. The die has a 2 on two sides, a 4 on two sides and a 6 on two sides. Note: the only possible outcomes for each roll are 2, 4 or 6. (a) Draw a tree diagram that shows the possible outcomes of rolling the die twice (my answer Roll 1: 2,

  50. MATH!

    An experiment consists of rolling a weighted die. The probability of rolling each number is: Pr[1]=0.05, Pr[2]=0.1, Pr[3]=0.25, Pr[4]=0.25, Pr[5]=0.2, and Pr[6]=0.15. On the first roll, you record if the number is Small (1,2) or Large (3,4,5,6). If the

  51. Statistics

    A gambling game works as follows: you flip a fair coin and roll a fair six-sided die. You will be paid $2 if you roll a 6 and $1 if you get a head and an odd number of spots. Otherwise, you have to pay $2.50. a) What is the probability of rolling a die

  52. Math

    Mrs. Brown decides to change her experiment. This time, she plans to roll the die until she gets a three. She wants to know the probability of getting her first three on her 5th roll. Explain why this is an example of a geometric experiment Define the

  53. biology

    One rule of probability can be expressed as the following: The probability of two independent events occurring simultaneously is the product of the probability of their occurring separately. If, for example, you had a pair of dice and rolled each die one

  54. probability

    Two six-sided dice each have the numbers 1 through 6 on their faces. Neither die is fair, but they are both weighted the same. The probability of rolling a certain number on one die is given in the table below: # 1 2 3 4 5 6 probability 1/6 1/6 1/9 ? 2/9 ?

  55. math

    You roll a number cube twice. Find the probability of the event in fraction form. -Rolling a 4 then an even number -Rolling a 3 then a 3 -Rolling a number less than 1 and then a number less than 2

  56. Discrete Math

    You are stranded on a deserted island, and along the way you stumble across a genie. He says he will get you off the island provided that you can meet his conditions. He hands you a 20-sided die, and says that you need to roll it 1000000 (one million)

  57. arithmetic

    Assume you roll a fair dice twice. Two rolls are independent and identically distributed, with probability of rolling a particular number being 1/6. So, for instance, the probability of rolling 5 and then 2 is P(5,2) = P(5) ⋅ P(2) = 1/6 ⋅ 1/6 = 1/36

  58. Math

    A game consists of you rolling one fair 6-sided die and observing the number that appears uppermost. If you roll a 2 or a 4, then you win $10. If you roll a 6, then you win $20. If you roll any other number, then you do not win any money. Find your

  59. math

    Consider the experiment of rolling a single die. Find the probability of the event described. What is the probability of rolling a number less than or equal to 4?

  60. arithmetic

    Assume you roll a fair dice twice. Two rolls are independent and identically distributed, with probability of rolling a particular number being 1/6. So, for instance, the probability of rolling 5 and then 2 is P(5,2) = P(5) ⋅ P(2) = 1/6 ⋅ 1/6 = 1/36

  61. math

    consider the experiment of rolling a single die. What is the probability of rolling a number that is divisible by 2 or 3?

  62. roll dice

    Event A you roll the die and it's even Event B you roll the die and it's less than 5 Roll the die once. What is the probability that Event A will occur given that Event B has alrady occured? would it be 3/4 = .75 or 75% not sure need help and, Roll the die

  63. Math

    Did I answer this correctly? Consider the experiment of rolling a single die. Find the probability of the event described. What is the probability of rolling an odd number? 1/2 is my answer. Thanks.

  64. college math

    If you roll a die many times, what would you expect to be the relative frequency of rolling a number less than 6? A) 2 out of 3 B) 1 out of 3 C) 1 out of 6 D) 1 out of 2 E) 5 out of 6

  65. math

    can someone help me ? If you roll a die many times, what would you expect to be the relative frequency of rolling a number less than 6? A) 2 out of 3

  66. math

    If you roll a die many times, what would you expect to be the relative frequency of rolling a number less than 6? A) 2 out of 3

  67. math

    If you roll a die many times, what would you expect to be the relative frequency of rolling a number less than 6? A) 2 out of 3

  68. Acc. PreCalculus

    1.A boy has 5 vests and 3 jackets. How many outfits can he wear if he wears both a vest and a jacket?How many outfits can he wear if he wears either a vest or a jacket? 2.If you roll two sided dice what is the probability of getting a 9? What is the

  69. college algebra: probability and statistics

    You roll a single die once. What is the probability you will roll an odd number or an even number?

  70. math

    you roll a number cube. what are the odds in favor of rolling a 1 or a 5?thanks. There are 6 sides of a cube. You want one of 2 numbers to show up. So it's 2/6 chance....or 1/3 Matt I assume that you are talking about a die (Singular for "dice"), it has a

  71. Math (Probability)

    My friend and I have been debating back and forth on the answer to this question. I say that it is 1/6, while she says that it is 1/60. So, the question is... If you are to roll a fair, six sided die ten times, what is the probability that you will roll a

  72. math 3

    Peter is playing a game where a ten-sided die is rolled. Four sides of the die have the number 10, three sides of the die have the number 5, two sides of the die have the number 25, and one side of the die has the number 27. What is the expected value of a

  73. Probability

    A loaded die has the property that the probability of throwing an odd number is three time the probability of throwing an even number. If the even number are equally likely to appear, find the probability of rolling either a 3 or a 6.

  74. Algebra 2

    A single die is rolled. find the probability of rolling an even number or a number less than 5, what is the probability Please help me with this question!!

  75. Probability

    The newest invention is a three-sided die. On any roll of this die, the result is 1 with probability 1/2, 2 with probability 1/4, and 3 with probability 1/4. Consider a sequence of six independent rolls of this die. 1. Find the probability that exactly two

  76. Geometry

    Consider the experiment of rolling a single die what is the probability of rolling an odd number? I came up with 0.5,even odds as there are 3 odd and 3 even numbers so the prob. is 0.5 Did I do this correct.

  77. math

    The game involves tossing a penny and a dime along with rolling a die. to win the penny land heads up, the dime land tails up and roll a 6 on the die. what is the probability that he will win on the first play

  78. pre-algebra B

    Milli tosses a coin and a six-sided die.The numbers on the die are 1 through 6. What is the probability that Milli will toss a tail and roll an odd number?

  79. algebra

    What is the probability of each event? a. rolling a sum of a prime number on one roll of two standard number cubes. b. rolling a sum of 5 or a sum of 3 on one roll of two standard number cubes.

  80. math

    i will roll a fair 6-sided dice. Writing your answers as fractions in their lowest terms, what is the probability of rolling: 1) a 4? 2) an even number? 3) a 7? 4) number less than 5? 5) number less than 10?

  81. mathematics

    A number cube is labeled with the numbers 1 through 6 . What is the probability of rolling a 1 or a 5 on the first roll? A) 1/6 B) 1/3 C) 2 D) 5/6

  82. Math

    Somebody repeatedly roll a fair die. If it comes up 6 he instantly wins(and stop playing); if it comes up k, for any k between 1 and 5, he he waits k minutes and then roll again. what is the expected elapsed time from when he starts rolling until he wins?

  83. Statistics

    A die that is fair will have each face of the die come up one-sixth of the time in the long run. The population for die throwing contains the results of throwing the die an infinite number of times. For this problem, the parameter of interest is p is the

  84. math

    What is the probability of rolling an odd number on a six-sided die? .5??

  85. Math 143

    What is the probability of not rolling a number larger than 4 with a fair die?

  86. geometry

    what is the probability of rolling a 6-sided die and getting a 4 or a number divisible by 3

  87. math

    You roll a die. If an odd number comes up, you lose. If you get a 6, you win $54. If it is an even number other than 6, you get to roll again. If you get a 6 the second time, you win $18. If not, you lose. (a) Construct a probability model for the amount

  88. statistics

    Is this correct: The probability of rolling a die once and getting a number greater than 3 or an odd number is 5/6.

  89. HELP MATH

    I am stuck on a probability question. Please help and tell me the easiest way to find the answer to this.. I am confused and keep getting 5/6 A fair die is rolled..what is the probability of rolling an odd number or a number less than 3? the actual answer

  90. Math Calculus

    Your friend tosses three coins and you roll a single die. If the number on the die you roll is less than or equal to the number of heads that your friend tosses, you win $X. If not, you lose $1. How large should X be in order for this to be a fair game?

  91. Math

    Your friend tosses three coins and you roll a single die. If the number on the die you roll is less than or equal to the number of heads that your friend tosses, you win $X. If not, you lose $1. How large should X be in order for this to be a fair game?

  92. calc-Probability -- PLEASE HELP!

    Your friend tosses 3 coins and you roll a single die. If the number on the die you roll is less than or equal to the number of heads that your friend tosses, you win $X. If not, you lose $1. How large should X be in order for this to be a fair game?

  93. math

    Your friend tosses three coins and you roll a single die. If the number on the die you roll is less than or equal to the number of heads that your friend tosses, you win $X. If not, you lose $1. How large should X be in order for this to be a fair game?

  94. math

    for the event of rolling one die, find a.P(rolling atlease a 3) b.P( ROLLING AN ODD NUMBER)

  95. math, probability

    A fair die is rolled 4 times a) create a probability distribution for the number of times the die rolls a 3. Do I solve this using the bernoulli trials formula? Or should I just examine the frequencies like this? E= Rolling a 3 A= Not a 3 EAAA 1 3 EEAA 2

  96. Data Management

    there is a six sided die, number 1- to 6. what is the probability that it it take exactly two tries to roll a 4? what is the expected waiting time until and odd prime number is rolled?

  97. algebra

    How do I do this? What is the probability of rolling a die twice and rolling a 6 the first time and an even number the second time? Is it 1/12, 4/32, 5/32, or Not Given?

  98. algebra

    How do I do this? What is the probability of rolling a die twice and rolling a 6 the first time and an even number the second time? Is it 1/12, 4/32, 5/32, or Not Given?

  99. algebra 2

    A single die is rolled one time find the probability of rolling a number greater than 3 or less than 2, need help

  100. help!!!!! Probability!!!

    A fair 6-sided die is rolled twice. The probability that the second roll is strictly less than the first roll can be written as a/b, where a and b are positive, coprime integers. What is the value of a+b?

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