5,395 Answered Questions for the topic probability

Probability

09/30/21

Probability distribution
10 people was randomly selected in a population. The prevalence of covid in the population is 1%. What is the probability that 1 person has covid and 9 people did not have covid?I am not sure if... more
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Probability

09/28/21

How many proper subsets are there of the set {H,I,J,K,L,M,N,O,P}
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Probability Math Elementary Math

09/28/21

Venn Diagram: Solve using Venn Diagram
A cellphone company has 1000 employees, 615 are male, 682 are single, and 345 are union members 285 are single male and 187 are single and union members, 120 employees are single male and union... more
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Probability Math Statistics

09/26/21

is this a sample or a population?
The data in the table below (and continued on the following page) show the 46 counties of South Carolina, and the number of cumulative COVID-19 cases reported by each county from the... more
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Probability

09/20/21

If the two spinners shown are each spun once, what is the probability that the sum of the two numbers is either even or a multiple of 3?
Spinner 1 has: (1, 2, 3, 4, 5, 6)Next spinner has: (1, 2, 3, 4, 5, 6, 7, 8)Been stuck on this problem for a long time. I know the answer but I have no idea how the textbook got there.
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Probability

09/19/21

Settling a debaate
There are three people sitting at a table. Person one decides to think of a number between 1-3. Person two will always get to choose first. Person three will choose second but has the chance of... more
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Probability Statistics

09/14/21

Refer to the sample data for a pre-employment drug screening shown below. If one of the subjects is randomly selected, find the following probabilities (rounded to 4 decimal places):
Refer to the sample data for a pre-employment drug screening shown below. If one of the subjects is randomly selected, find the following probabilities (rounded to 4 decimal places): Positive... more
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Probability Statistics

09/14/21

Call a household prosperous if its income exceeds $100,000.

Call a household prosperous if its income exceeds $100,000. Call the household educated if the householder completed college. Select an American household at random, and let AA be the event that... more
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Probability Statistics

09/14/21

Suppose that two machines 1 and 2 in a factory are operated independently of each other.

Suppose that two machines 1 and 2 in a factory are operated independently of each other. Let AA be the event that machine 1 will become inoperative during a given 8-hour period; let BB be the event... more
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Probability Statistics

09/14/21

One marble is to be selected from a box containing red, white, blue, yellow, and green marbles.
One marble is to be selected from a box containing red, white, blue, yellow, and green marbles. If the probability that the selected marble will be red is 2/7 and the probability that it will be... more
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Probability Statistics

09/14/21

Suppose a fair coin is tossed three times.
Suppose a fair coin is tossed three times.a) Using a tree diagram, list out all outcomes in the sample space. Let TT denote the coin lands on tails and HH denote the coin lands on heads.  b) Using... more
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Probability

09/14/21

A bag contain 10 white and 6 black balls, 4 balls are successively drawn out and not replaced. What are the probability of they are of alternately different colours
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Probability Statistics

09/09/21

probability statistics

A casino runs a game which consists of a sequence of coin tosses, if toss head, then gain +1 and the probability is 1/2. If toss the tail, then gain -1 and the probability is 1/2. A gambler starts... more
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Probability Statistics

09/09/21

Probability question
A fair die is cast until a 6 appears. What is the probability that it must be cast more than five times?
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Probability Statistics

09/09/21

Probability question
the Smiths have two children, At least one of them is a boy. What is the probability that both children are boys?
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Probability Statistics

09/09/21

Probability question
Two players, A and B, alternately and independently flip a coin and the first player to obtain a head wins. Assume player A flips first(a) if the coin is fair, what is the probability that A... more
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Probability Statistics

09/09/21

Probability question
Two people each toss a fair coin n times, Find the probability that they will toss the same number of heads
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Probability

09/09/21

Probability question
Suppose I have three coins. Two are fair coins (they have a 50% chance of landing on heads and a 50% chance of landing on tails). One is a weighted coin that has a 75% chance of landing... more
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Probability Statistics

09/08/21

An urn contains 6 red marbles, 7 white marbles, and 6 blue marbles marbles. A child randomly selects three (without replacement) from the urn. Round to four decimal places.
An urn contains 6 red marbles, 7 white marbles, and 6 blue marbles marbles. A child randomly selects three (without replacement) from the urn. Round to four decimal places.1.) Find the probability... more
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Probability

09/08/21

Using a standard 52-card deck, find the following probabilities. Leave your answer as a reduced fraction.
Using a standard 52-card deck, find the following probabilities. Leave your answer as a reduced fraction.1.) If a card is randomly selected, what is the probability that the card is any one suit,... more
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Probability Statistics

09/08/21

probability statistics
Suppose a jar contains 13 red marbles and 36 blue marbles. If 2 marbles are randomly chosen from the jar at the same time, find the probability that both marbles are red. Round your answer to four... more
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Probability

09/08/21

A basket contains 4 green balls 3 black balls and two white balls what is the probability of picking a green ball and a white ball
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09/08/21

Normal distribution
A brisk walk at 5 miles per hour burns an average of 320 calories per hour. If the standard deviation of the distribution is 8 calories/hour, find the percentage of people who walk at 5 miles per... more
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09/07/21

Statistics and Probability pls help : (
An inventor created a machine where you can input a string of 4 letters and expect an output from it. If you input any of the letters S, C, or D, the probability that the output of the letter... more
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Probability

09/06/21

Collage Probability
Five cards are drawn randomly from a pack of 52 playing cards .(a) Find the probability that at most 2 Kings are drawn given that at least 1 King is drawn.(b) Find the probability that 3 kings and... more
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