5,385 Answered Questions for the topic probability

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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Probability Math Statistics

04/04/21

Determine the probability that at least 4 brake pads are defective in an order of 200 pads.
In a manufacturing process, 0.2% of the brake pads that come off of the production line are defective. Determine the probability that at least 4 brake pads are defective in an order of 200 pads.I’m... more
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Probability

04/03/21

probability questions

You have been provided with marks obtained by 1000 students of mass communication. the average score of student was 68 with a standard deviation of 16. assuming the data to be normally distributed... more
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Probability

04/02/21

Three Coins Probability
If you flip three fair coins, what is the probability that you'll get all three heads?
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Probability Statistics

04/02/21

Set of normally distributed test scores has a mean of 77 and a standard deviation of 5.

Set of normally distributed test scores has a mean of 77 and a standard deviation of 5. (Draw distribution and indicate each value)a. What is the probability that normally selected score will be... more
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Probability Statistics

04/02/21

How many different 3 letter words you can construct from the letters of the word “ TRAIN “, using each letter only once?
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Probability Statistics

04/02/21

For binomial distribution with n=8 and p=0.3 find: a) P( x=0) b) P( x<2 ) c) P( x>3 )
For binomial distribution with n=8 and p=0.3 find: a) P( x=0)b) P( x<2 ) c) P( x>3 )
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Probability Geometry

03/31/21

If A and B are independent events, which equation must be true?
A. P(B|A) = P(A)B. P(B|A) = P(B)C. P(B|A) = P(A) × P(B)D. P(B|A) = P(A) + P(B)
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Probability Calculus Statistics

03/30/21

How do I find standard of error?
Suppose that the efficiency of a certain drug is 0.49. Consider the sampling distribution (sample size n= 94) for the proportion of patients cured by this drug.What is the standard error of this... more
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Probability Statistics

03/30/21

Probability of randomly selected
Fox News recently reported that the mean annual cost of auto insurance is $1000. Assume the standard deviation is $200, and the cost is normally distributed. Take a random sample of 13 auto... more
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Probability Statistics

03/29/21

mean and standard deviation
A particular fruit's weights are normally distributed, with a mean of 595 grams and a standard deviation of 29 grams.If you pick 16 fruits at random, then 3% of the time, their mean weight will be... more
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Probability Statistics

03/29/21

Stock probability
Suppose that the value of a stock varies each day from $12.22 to $45.34 with a uniform distribution.Given that the stock is greater than $17, find the probability that the stock is more than $33.... more
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Probability Statistics

03/29/21

Probability of class time
A teacher's class has a continuous uniform distribution between 49.2 mins and 55.5 mins. One class is randomly selected and its probability that the class time is longer than a certain number of... more
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Probability Math Science Philosophy

03/29/21

The statement below is fallacious. Indicate which fallacy the speaker has committed:
"Which is more likely--that the Yankees lose the first game of the series, or that they lose the first game and come back to win? I expect the Yankees to win the series, so I'll take the second... more
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Probability Geometry

03/29/21

Drag the tiles to the correct boxes to complete the pairs.
Two numbers are randomly selected on a number line numbered from one to nine. Match each scenario to its probability:the probability that both numbers are greater than six if the same number can be... more
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Probability Geometry

03/29/21

You are performing two chemistry experiments.

The probability that both experiments are successful is 22%. If the first experiment is successful, the probability that the second experiment is also successful is 31%. What is the probability... more
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Probability

03/29/21

the prize in a lucky draw contain 2 LCD tvs, 3 computer system AND 5 mountain bikes. if you are one of the prize winner what is the probability that you won a LCD tv?
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Probability Statistics

03/28/21

How do you solve D. ?
Dogs weigh more than cats, on average. Suppose a random sample of 40 dogs gives a sample mean of lbs with a standard deviation of  and a random sample of 50 cats gives a sample mean of with a... more
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