5,341 Answered Questions for the topic probability

Probability Statistics

12/02/20

Probability Question
In an office, there are three secretaries, four accountants, and two receptionists. If a committee of three is to be formed, find the probability that one of each will be selected.
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Probability

12/01/20

Probability, How many four-letter words can be made from the 10 letters "ABCDEFGHIJ"?
If repetition is allowed:If repetition isn't allowed:Each word must begin with an 'A' and letters can be repeated:
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Probability

12/01/20

Distribution and Statistics
A two-year investment breaks even at the end of two years but yielded a 36% loss in the first year. Find the average annual rate of return for this investment.____%Any help is much appreciated.
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Probability Math

12/01/20

What is the Probability
For a few weeks, a music producer kept track of newly released songs on a music streaming website. He recorded the music genre and number of times the song was played on its... more
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Probability

11/30/20

Probability without replacement
1.A jar contains 4 red balls and 7 blue balls. Two balls are drawn at random from the jar without replacement. What is the probability that exactly one of the balls is red.2. A jar contains 5 red... more
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Probability

11/28/20

Expected value, CDF
Suppose we have a positive, continuous probability variable X, the following expression for the variable does not depend on s: E (X − s | X ≥ s), where E( ) Is the expected value.What is the... more
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Probability

11/27/20

Choosing given number of items from different subsets
A gathering is attended by A women and B men.Women individually, independently of each other, have a p probability of getting to know each other, while men's chance of getting to know each other is... more
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Probability Statistics

11/26/20

reccurence relation
Suppose that an and bn are both solutions to a recurrence relation of the form xn = αxn-1 + βxn-2. Prove that for any constants c and d, c an + d bn is also a solution to the same recurrence... more
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Probability Statistics Reccurence

11/26/20

Probability .

solve the given reccrence relation problemxn = xn-1 + 2n , x0 = 5
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Probability

11/26/20

Given the Equation

Solve the following recurrence relationsxn = 2xn-1+xn-2-3xn-3, x0=2, x1=1, x2=4
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Probability Math Statistics

11/25/20

If 8 pairs of fair dice are rolled, approximate the probability that the sum of the values obtained (which ranges from 16 to 96) is between 30 and 40 inclusive.
If 8 pairs of fair dice are rolled, approximate the probability that the sum of the values obtained (which ranges from 16 to 96) is between 30 and 40 inclusive.
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Probability Math Statistics

11/25/20

what is the approximate probability that fewer than 175 chips will be defective?
Question 5 [12 marks] Each computer chip made in a certain plant will, independently, be defective with probability .2. If a sample of 1,000 chips is tested, what is the approximate probability... more
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Probability Math Statics

11/25/20

Consider the following data on the diameter of a rivet. Assume a normal population.
Consider the following data on the diameter of a rivet. Assume a normal population. 6.68 6.66 6.62 6.72 6.76 6.67 6.70 6.72 6.78 6.66 6.76 6.72 6.76 6.70 6.76 6.76 6.74 6.74 6.81 6.66 6.64 a)... more
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Probability

11/25/20

The amount of time to complete a physical activity in a PE class is approximately normally normally distributed with a mean of 37.3 seconds and a standard deviation of 5.6 seconds.

The amount of time to complete a physical activity in a PE class is approximately normally normally distributed with a mean of 37.3 seconds and a standard deviation of 5.6 seconds.  What is the... more
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Probability Math Statistics

11/25/20

what is the approximate probability that fewer than 175 chips will be defective?
Each computer chip made in a certain plant will, independently, be defective with probability .2. If a sample of 1,000 chips is tested, what is the approximate probability that fewer than 175... more
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Probability Statistics

11/24/20

C(20, 8) = 20! ÷ [(8)!*(12)!] =

A caterer offers 20 different types of dessert. In how many ways can 8 of them be chosen for a banquet if the order doesn’t matter?
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Probability Statistics

11/24/20

What is the smallest number of different colors of tiles needed to form 44 squares so that no tile touches another of the same color along the entire edge
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Probability

11/22/20

Probability Expected Value
Can someone pls explain the following question in detail with all the steps? If X is a continuous random variable with density function f (x) that is an even function and E(X) exists, show... more
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Probability Math Diagram Mathematics

11/22/20

What is the probability that a randomly selected member of the club?
1. Forty percent of the members of the Chicago Charges Track and Field Club participated in 40 % of the events at the recent provincial meet, while 34% entered the field events, and 18% entered... more
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Probability Math Mathematics Help

11/21/20

You are given seven keys, and you know that one of them opens a treasure chest. 
2. You are given seven keys, and you know that one of them opens a treasure chest.     You try one key after another, in random order. What is the chance that you will open the chest on the first... more
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Probability Math Mathematics Patterns

11/21/20

A lake contains two kinds of trout, rainbow and brown.
2. A lake contains two kinds of trout, rainbow and brown. It is estimated that 40% of the trout are rainbow. Of the rainbow trout, 60% are mature, and of the brown trout, 30% are mature. You have a... more
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Probability Math Mathematics Patterns

11/21/20

1. A factory producing headsets has three assembly lines, A, B, and C, which manufacture 20%, 30%, and 50% of the total production, respectively.
1. A factory producing headsets has three assembly lines, A, B, and C, which manufacture 20%, 30%, and 50% of the total production, respectively. It is known that the products from assembly lines... more
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Probability Math Mathematics Help

11/21/20

An urn contains 40 marbles; 25 are red, 10 are white, and 5 are blue. You choose one marble at random.
a. What is the probability of choosing a white marble?b. What is the probability of choosing a marble that is not blue?c. You choose a marble at random and are told that it is not blue.    What is... more
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Probability Math Fractions Cards

11/21/20

1. You draw one card from a deck of 52.
b. What is the probability of drawing a heart if you know that you have drawn a     red card?c. What is the probability of drawing a heart if you know that you have a face     card?d. What is the... more
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Probability Statistics

11/21/20

Expected Value and Statistics
If X is a continuous random variable with density function f (x) that is an even function and E(X) exists, show that E(X) = 0
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