5,341 Answered Questions for the topic probability

Probability Algebra 1

04/09/21

Probability question
A refrigerator contains 10 bottles of water, 7 bottles of apple juice, and 13 bottles of orange juice. If 2 drinks are taken at random from the refrigerator, what is the probability that both... more
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Probability Algebra 1

04/09/21

Probability question
A refrigerator contains 10 bottles of water, 7 bottles of apple juice, and 13 bottles of orange juice. If 2 drinks are taken at random from the refrigerator, what is the probability that both... more
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Probability Algebra 1

04/09/21

A box contains 9 orange crayons, 13 grey crayons, 7 purple crayons, and 11 blue crayons. If you randomly pick 2 crayons from the box, what is the probability that neither of them is purple?
A box contains 9 orange crayons, 13 grey crayons, 7 purple crayons, and 11 blue crayons. If you randomly pick 2 crayons from the box, what is the probability that neither of them is purple?
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Probability Math Statistics

04/09/21

A bag contains 50 balls, 20 blue and 30red. Two balls are taken one after another without replacement. Find the probability of getting 2 red balls?.
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Probability Math Statistics

04/09/21

A coin was tossed 400 times and head appeared 221 times. Test the hypothesis that the coin is unbiased.
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Probability Math Statistics

04/09/21

Please find the question below:
In a group of 200 graduate engineering students 100 are enrolled in an advanced course instatistics 50 are enrolled in a course in OR and 30 are enrolled in both. How many of thesestudents are not... more
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Probability

04/09/21

Probability math question

Suppose you pay $1 to play a game in which a pair of fair (6-sided) dice is rolled. If a sum of 6,7, or 8 comes up you win $5. If a 2 or 12 comes up you win $3. Otherwise you lose the dollar you... more
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Probability

04/09/21

Aleks Assignment
A science class has 5 girls and 5 boys in the seventh grade and 5 girls and 3 boys in the eighth grade. The teacher randomly selects a seventh grader and an eighth grader from the class for a... more
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Probability Math

04/08/21

What is the correct mean absolute deviation of the 10 plants?
Mr. O'Lear is conducting an experiment that involves 10 plants. He initially determined that the plants had a mean height of 72 centimeters and a mean absolute deviation of 8.5 centimeters. He... more
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Probability Statistics

04/08/21

How many ways can a chef arrange 8of 12 spice jars on a spice rack?
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Probability

04/08/21

A fair coin is tossed trice. Let X be the number of tails that are observed.
Construct the probability distribution of X.
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Probability

04/07/21

Calculus probability
Assume that thermometer readings are normally distributed with a mean of 0 degrees C and a standard deviation of 1 degree C. A thermometer is randomly selected and tested. Find the probability... more
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Probability

04/07/21

what's the probability of drawing a Jack, queen or king from a deck of cards over 3 draws?
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Probability

04/07/21

Let the test statistic T have a t-distribution when Ho is true.

Give the significance level for each of the following situations: (Give your answers to 3 decimal places) (a) Ha:μ>μ0,n=16, rejection region t≥3.733 α=______ (b) Ha:μ≠μ0,n=31, rejection... more
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Probability

04/07/21

Let the test statistic z have a standard normal distribution when Ho is true.

Give the significance level for the following: (Give your answers to 3 decimal places) Ha:μ<μ0, rejection region z≤−2.75 α=______
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Probability

04/07/21

Quantative Literature
The probability that it will rain on any given day is 15% or 0.15. Find the probability it will rain at least once in the next three days.
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Probability

04/07/21

If a person draws four cards from a standard deck (without replacing them), what is the probability that at least one of the cards is a face card?
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Probability Math

04/06/21

If P(A) = 0.2, P(B) = 0.7, and P(A and B) = 0.1, find P(A or B).
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Probability Math

04/06/21

Two dice are rolled. The sum of the dice is a 5 or a 11. Compute the probability of the compound event occurring.
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Probability Math Statistics Sat Math

04/06/21

Tom, a holiday light inspector, has to check a shipment of multicolored Christmas lights. Suppose that the probability of a defective lightbulb is 30%.
a. Find the expected number of bulbs that Tom has to go through until he finds one that is defective.b. Find the probability that the first defective bulb that Tom finds is the 8th bulb.c. Find the... more
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Probability Math Algebra 1 Algebra 2

04/06/21

CONTINUOUS RANDOM VARIABLE PLEASE HELP
A continuous random variable is normally distributed. The probability that a value in the distribution is greater than 56 is 0.6387. Find that probability that a value in the distribution is less... more
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Probability Math Statistics Sat

04/06/21

Statistics Probability.

Every cereal box has a gift inside, but you cannot tell from the outside what the gift is. The store manager assured you that 16 of the 47 boxes on the shelf have a secret decoder ring. The other... more
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Probability Math Algebra 1 Calculus

04/06/21

Distribution of Values

A distribution of values is normal with a mean of 729.2 and a standard deviation of 30.8. Find the probability that a randomly selected value is between 662.1 and 826.5Enter your answer as a number... more
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Probability Statistics

04/06/21

Probability Statistics - URGENT
A population is normally distributed with mean 17.9, and a standard deviation of 3.5. fine the probability that a sample of 14 values take from the population will have a mean less than 16. * all z... more
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04/06/21

Continuous Random Variable URGENT
A continuous random variable is normally distributed. The probability that a value in the distribution is greater than 56 is 0.6387. Find the probability that a value in the distribution is less... more
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