5,341 Answered Questions for the topic probability

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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Probability

03/28/21

Probability - When to use Combination v. Permutation
Could someone clarify if a permutation is supposed to be used to solve a problem with no replacement included, using the following question as an example to explain?Jacob has 10 rap, 18 rock, 8... more
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Probability Math Permutation

03/27/21

math permutations pls help
How many different permutations can be made from the letters "REPEATED" if the three E's are consecutive? Find the number of different 8-letter arrangements that can be made from the letters of... more
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Probability

03/26/21

A fair number cube is labeled with the numbers 1 through 6. Which sequence is most likely to result from rolling the cube 15 times?
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Probability

03/25/21

I need help with my probabitly and statistics

Need help The mean percent of childhood asthma in 43 cities is 2.25 a random sample of 32 of these cities is selected .what is the probability that the mean childhood asthma prevalence for the... more
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Probability

03/24/21

What is the probability of not getting a face card from a standard deck of cards?
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Probability Statistics

03/24/21

Probability question
The Department of Homeland Security wants to test a computer virus that it has developed to combat hackers. They plan to test run the virus on randomly selected computers with pre-set "hacker"... more
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Probability

03/24/21

Let X1,X2,...,X12 be independent identically distributed N(3.6,0.70) random variables, with an average X¯. (a) Calculate P(3.2≤X¯≤3.9) (b) Find the value of c for which P(3.6−c≤X¯≤3.6+c)=0.95
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03/24/21

I'm in need of assistance.

A jar contains 6 red marbles numbered 1 to 6 and 8 blue marbles numbered 1 to 8. A marble is drawn at random from the jar. Find the probability the marble is red or odd-numbered.
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