5,385 Answered Questions for the topic probability

Probability

11/18/21

Please help with this. Thanks.

Addition and subtractionA spinner has the numbers 1 to 4 on it. The area given to each number relates to their chance of occurring. The probability of spinning a number 4 is 0.1 The probability... more
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Probability

11/16/21

Probability Distribution

There is currently a global pandemic and many researchers and scientists are working towards finding a vaccine that is suitable for children. Assume that Advanced Researcher, a company that is... more
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Probability

11/16/21

Auto insurance company classifies it's customer in three
An auto insurance company classifies its customers in three​ categories: poor,​ satisfactory, and preferred. Each​ year, 30​% of those in the poor category are moved to satisfactory and 5​% of... more
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Probability

11/16/21

two balanced dice are rolled, the probability that the sum of the upturned faces equals to 5
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11/15/21

In any normal distribution, the probability of randomly selecting an observation that is less than the population mean is 68%. True or False?

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Probability

11/15/21

binomial probability
Consider a card selected at a random and replaced. If this experiment is repeated 5 times, let us find the probability of selecting exactly 3 hearts. Use the binomial distribution. Also find out... more
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Probability

11/15/21

Need help with a math question
These values have an average of 8. What is the average distance of those values from that average of 8?
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Probability

11/14/21

Probability Distribution
A bag contains 12 green and 8 orange balls that are identical except for their color.A ball is chosen from the bag, its color noted, and then it is replaced. Eight balls are chosen.(a) Find(i)The... more
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Probability

11/14/21

From a standard 52 card deck, you draw two cards without replacement. What is the probability that both cards are red knowing at least 1 is red?
The probability of a second drawn card being red is (26-1)/(52-1) = (25/51) because we already know one of the 26 red cards is drawn and one is removed from the complete deck.Is there anything I am... more
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Probability Math Precalculus Sat Math

11/13/21

To make the game fair, who should gain points if a 1 is rolled, and how many points should they gain?
A single six-sided die is rolled and point values are assigned to each outcome. The dice is rolled once and if the dice shows a 5 or a 6, Joe gains 6 points. If the dice shows a 2,3 or 4, Fred... more
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Probability Math Precalculus Sat Math

11/13/21

Find the probability that Fred will have a sum of 7, find the probability that Joe and Fred will both have the same sum, and find the probability that billy has a higher sum than 9.
Joe rolls two dice and adds the numbers showing. Fred then rolls two dice and adds the numbers showing.
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Probability Math Precalculus

11/13/21

What is the probability that green is rolled exactly 7 times?
On a dice, one side is red, three sides are green and two sides are blue. The dice is also rolled 20 times.
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Probability Math Math Precalculus

11/13/21

Independent events, A and B where P(B) = 0.25 and P(A ∩ B) = 0.15. Find P(B' l A) and P(A' ∩ B')
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Probability Math Math Precalculus

11/13/21

Independent events, A and B where P(B) = 0.25 and P(A ∩ B) = 0.15. Find P(B' l A) and P(A' ∩ B')
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Probability

11/11/21

Probability Distribution
In a exam, the probability of being awarded a grade A is 0.3.For a group of ten participants, calculate(i)the probability of that three achieve grade A(ii)the probability that at least half achieve... more
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Probability

11/11/21

Probability Distribution
A bag contains 12 green and 8 orange balls that are identical except for their color.A ball is chosen from the bag, its color noted, and then it is replaced. Eight balls are chosen.(a) Find(i)The... more
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Probability

11/11/21

Probability Distribution
In a large town one person in five is left-handed.(a) Find the probability that in a group of 30 person. (i) exactly three will be left-handed (ii) one third will be left handed(b) How... more
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Probability

11/10/21

Probability Distributions
In a box of smarties there are eight different colours which normally occur in equal proportions. Rachael is given 24 smarties, and orange ones are her favourite. Assume they come from a very large... more
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Probability Math Sat Math Act Math

11/09/21

Tricky probability problem
Please help me to solve this one.Mark bought 5 yellow, 3 green, 2 blue, and 2 red notebooks. The next day he brought two of his 12 notebooks. IF he takes the third notebook from the remaining ones,... more
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Probability Statistics

11/05/21

Suppose 35% of CBC students intend to major in the health sciences. What is the minimum sample size required for the distribution of the sample proportion to be modeled by the normal distribution?
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Probability

11/04/21

How would i calculate probability of something with multiple variables?
I wanted to figure out percentage chance of it being a persons birthday within a group of people.
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Probability

11/04/21

Probability Question for Statistics

70% like chocolate ice cream, 40% like strawberry ice cream, and 30% like both. What’s the probability that a randomly selected middle school student likes chocolate ice cream, given that they like... more
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Probability

11/02/21

INDEPENDENT AND DEPENDENT EVENTS
Consider the experiment of randomly selecting a one card from a deck of 52 playing cards a.) Determine whether the event of selecting a king is independent of the event selecting a face.b.)... more
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Probability

11/01/21

Probabilty and statistis
Suppose that the weight of people in a specific town are normally distributed with the mean of 140 pounds and standard deviation of 20 pounds. Answer the following questions:  Find the percentage... more
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Probability

11/01/21

Probablity question
Assuming that our random variable Y belongs to Binomial distribution and Y∼ Binomial (n = 36, p = 1/3). Find the probability that Y > 14
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