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probability

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    A single card is drawn from a standard 52 card deck. What is the possibility that the card drawn is

    A single card is drawn from a standard 52 card deck. What is the possibility that the card drawn is either a 4 or a 6 There are 4 (4's) and 4 (6's) in a standard 52 card deck. P(4 or 6) = P(4) + P(6) P(4 or 6) = 4/52 + 4/52 P(4 or 6) = 8/52 We can simplify this fraction by typing it in our...
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    Each of letters in the word PROPER are on separate cards, face down on the table. If you pick a card

    Each of letters in the word PROPER are on separate cards, face down on the table. If you pick a card at random, what is the probability that its letter will be P or R? PROPER has 6 letters in it. It has 2 P's and 2 R's. So we have: Pr(P or R) = Pr(P) + Pr(R) Pr(P or R) = 2/6 + 2/6 Pr(P or R) =...
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    Each of the letters in the word PLOTTING are on separate cards, face down on the table. If you pick

    Each of the letters in the word PLOTTING are on separate cards, face down on the table. If you pick a card at random, what is the probability that its letter will be T or G? PLOTTING has to 8 letters. It has 2 T'sand 1 G, so we have: P(T or G) = P(T) + P(G) P(T or G) = 2/8 + 1/8 P(T or G) = 3/8
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    Jennifer is playing cards with her bestie when she draws a card from a pack of 25 cards numbered fro

    Jennifer is playing cards with her bestie when she draws a card from a pack of 25 cards numbered from 1 to 25. What is the probability of drawing a number that is square? The squares from 1 - 25 less than or equal to 25 are as follows: 1^2 = 1 2^2 = 4 3^2 = 9 4^2 = 16 5^2 = 25 So the...
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    7 black shirts 5 white shirts 10 gray shirts one is chosen at random, what is the probability that i

    7 black shirts 5 white shirts 10 gray shirts one is chosen at random, what is the probability that it is not gray Find the total shirts: Total shirts = Black Shirts + White Shirts + Gray Shirts Total shirts = 7 + 5 + 10 Total shirts = 22 Calculate the probability of choosing a gray shirt...
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    A bag contains tiles, 3 tiles are red. 6 tiles are green, and 3 tiles are blue. A tile will be rando

    A bag contains tiles, 3 tiles are red. 6 tiles are green, and 3 tiles are blue. A tile will be randomly selected from the bag . What is the probability that the tile selected will be green P(green) = Number of green tiles / Total Tiles P(green) = 6 / (3 + 6 + 3) P(green) = 6 / 12 We can...
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    A card is drawn from a pack of 52 cards. The probability that the card drawn is a red card is

    A card is drawn from a pack of 52 cards. The probability that the card drawn is a red card is The deck is split evenly between red and black cards. So we have 52/2 = 26 red cards P(Red) = # of Red Cards / Total Deck Cards P(Red) = 26/52 We can simplify this fraction. Using our fraction...
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    A bag contains 5 blue marbles, 6 red marbles, and 4 green marbles. You select one marble at random f

    A bag contains 5 blue marbles, 6 red marbles, and 4 green marbles. You select one marble at random from the bag. What is P(blue) P(blue) = Number of blue marbles / Total Marbles P(blue) = 5 / (5 + 6 + 4) P(blue) = 5/15 We can reduce this. So we type in 5/15 into our search engine, choose...
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    20% of Kay’s pencils in her pencil case are broken. What is the chance of taking a pencil that is no

    20% of Kay’s pencils in her pencil case are broken. What is the chance of taking a pencil that is not broken from the case if she picks one at random? This means 100% - 20% = 80% of pencils are not broken So the probability of drawing a pencil which is not broken is 80%
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    If two standard dice are rolled, what is the probability that the sum is 3?

    If two standard dice are rolled, what is the probability that the sum is 3? Using our 2 dice calculator, we get: 1/18
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    In the wild, monkeys eat an average of 28 bananas a day with a standard deviation of 2 bananas. One

    In the wild, monkeys eat an average of 28 bananas a day with a standard deviation of 2 bananas. One monkey eats only 21 bananas. What is the z-score for this monkey? Is the number of bananas the monkey eats unusually low? Using our z-score calculator, we get: Z < -3.5 P(Z < -3.5) = 0.499767...
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    A bag contains 2 red marbles, 3 blue marbles, and 4 green marbles. What is the probability of choosi

    A bag contains 2 red marbles, 3 blue marbles, and 4 green marbles. What is the probability of choosing a blue marble, replacing it, drawing a green marble, replacing it, and then drawing a red marble? Calculate total marbles in the bag: Total marbles in the bag = Red Marbles + Blue Marbles +...
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    A golf ball is selected at random from a golf bag. If the golf bag contains 5 type A balls, 4 type B

    A golf ball is selected at random from a golf bag. If the golf bag contains 5 type A balls, 4 type B balls, and 9 type C balls, find the probability that the golf ball is not a type A ball Not Type A means Type B or Type C. Our total balls = 5 + 4 + 9 = 18 P(B or C) = P(B) + P(C) P(B or C) =...
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    How many possible outcomes of rolling 4 dice

    How many possible outcomes of rolling 4 dice Each die has 6 faces, so we have: 6 * 6 * 6 * 6 = 1,296 possible outcomes
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    Probability of getting 4 or 6 when rolling a dice

    Probability of getting 4 or 6 when rolling a dice P(4 or 6) = P(4) + P(6) P(4 or 6) = 1/6 + 1/6 P(4 or 6) = 2/6 We can simplify this. We type this fraction into our search engine, choose simplify, and we get: P(4 or 6) = 1/3
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    A drawer is filled with 9 black shirts , 6 white shirts, and 5 gray shirts one shirt is chosen at ra

    A drawer is filled with 9 black shirts , 6 white shirts, and 5 gray shirts one shirt is chosen at random from the drawer find the probability that it is not a white shirt P(Not White) = P(Black or Gray) P(Black or Gray) = (Total Black + Total Gray)/Total Shirts P(Black or Gray) = (9 + 5)/(9 + 6...
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    A card is picked from a deck of 52 cards. Find the probability of getting a black ace or a red queen

    A card is picked from a deck of 52 cards. Find the probability of getting a black ace or a red queen. In a standard deck of 52 cards, we have: 2 black Aces with probability 2/52 = 1/26 using our fraction simplifier 2 red Queens with probability 2/52 = 1/26 using our fraction simplifier The...
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    if flip a coin 4 times, what is the probability of getting all 4 tails

    if flip a coin 4 times, what is the probability of getting all 4 tails. P(Tails) = 1/2 Each flip is independent, so we have: P(TTTT) = 1/16
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    A lottery uses a container with 25 identical balls numbered 1 through 25, from which three balls are

    A lottery uses a container with 25 identical balls numbered 1 through 25, from which three balls are selected. What is the theoretical probability that the number 13 is picked first? P(1st ball being 13) = 1 /25
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    what is the probabilty of tossing two coins and both landing on heads

    what is the probabilty of tossing two coins and both landing on heads We want P(HH). We type in HH into our search engine and we get: P(HH) = 0.25 or 1/4
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