5,341 Answered Questions for the topic probability

Probability

06/08/20

what is the detailed answer for this question?
Students have been organized in two groups for Chinese language courses – 10 students in the first group and 9 in the second. 2 students in the first group and 7 in the second have prior... more
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Probability

06/08/20

The 2 events P(E) and P(F) are independent with P(E) =0.45 and P(F) =0.65. Find P(E U F)
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Probability Markov Markov Chain

06/07/20

Markov Chain Problem
An investor bought shares of a company at $30 per share. Currently the value of the share is $31. The investor will sell the shares either as soon as he makes 10% or more, or when the stock drops... more
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Probability

06/07/20

Mathematics Probability
A password is a sequence of letters (a{z) and digits (0{9). Find the number of passwords of length 10 under the constraints in (a), (b) or (c) (three separate problems). Express your answer using... more
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Probability

06/07/20

Mathematics Probability
The planner in charge of raw materials operations at a well known beer-producing company needs to obtain 5 truckloads of fresh water. The ve trucks available can go to any of 11 sources of water... more
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Probability

06/05/20

Defective Item Probability question
Suppose that a box of 15 items from a manufacturing company is known to contain 4 defective and 11 non-defective items. A sample of 3 items is drawn. Find the probability that the sample contains... more
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Probability

06/05/20

License Plate Probability Question
A license plate consists of 1 number followed by 2 letters followed by space. After the space the 3 entries can be either a number or a letter. How many license plates are possible using this... more
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Probability Math Algebra 2 Mathematics

06/05/20

Lani had a box that contained: 1 blue marble, 1 green marble, 1 purple marble, 1 yellow marble, and 2 red marbles.
Lani removed one marble without looking, and she recorded the result. She placed the marble back in the box and repeated the procedure one more time. What is the probability that Lani removed a red... more
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Probability Math Algebra 2 Mathematics

06/05/20

A baseball player, on the average, has 3 hits out of every 4 attempts to hit the ball. What is the probability that she will go hitless on the next three times at bat?
a. 1/64b. 1/4c. 27/64d. 3/4
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Probability Math Algebra 2 Mathematics

06/05/20

Lita flipped a coin 5 times. On each flip the coin landed on tails. Which of these shows how to calculate the probability of this outcome?
a. 5 x 1/2b. 1/2 x 1/5c. 1/2 x 1/2 x 1/2 x 1/2 x 1/2d. 1/2 + 1/2 + 1/2 + 1/2 + 1/2
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Probability Math Statistics

06/04/20

probability and random variables
Let X and Y be two discrete random variables with joint probability mass function Pxy (x, y). Show that marginal probability mass function of X can be calculated as follows:Px(X) = Σy∈Sy... more
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Probability

06/03/20

How do I solve these problems and what are the answers?
In a lottery, you must choose three different numbers (1-30). To win, your numbers must match the three numbers drawn in any order. Numbers cannot be repeated. How many different lottery tickets... more
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Probability

06/03/20

Probability of independent event
There is a stack of 10 cards he’s giving a different number from 1 to 10. Suppose we select a car randomly from the stat replace it and then randomly select another card. What is the probability... more
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Probability Math Statistics

06/03/20

Probability statistic
In a game of “Chuck a luck” a player bets on one of the numbers 1 to 6. Three dice are then rolled and if the number bet by the player appears i times (where i equals to 1, 2 or 3) the player then... more
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Probability Statistics

06/03/20

Statistics And Probability
About 1% of the population has a particular genetic mutation. 900 people are randomly selected.Find the standard deviation for the number of people with the genetic mutation in such groups of... more
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Probability Statistics

06/03/20

Statistics And Probability
63% of owned dogs in the United States are spayed or neutered. Round your answers to four decimal places. If 32 owned dogs are randomly selected, find the probability that a. Exactly 21 of them... more
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Probability Statistics

06/03/20

Statistics and Probability
The table summarizes results from 979 pedestrian deaths that were caused by automobile accidents. Pedestrian Deaths Driver Intoxicated? Pedestrian... more
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Probability

06/03/20

. what is the probability that both pieces you take are milk chocolate
a box of chocolates contains six milk chocolate and eight dark chocolate. what is the probability that both pieces you take are milk chocolate?
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Probability Statistics

06/03/20

Statistics question
Let X and Y be two discrete random variables with joint probability mass function Pxy (x, y). Show that marginal probability mass function of X can be calculated as follows: Px(X) = Σy∈Sy Pxy(x,y)... more
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Probability

06/03/20

Lottery ticket expectation of winning
Suppose 100000 tickets are sold on a lottery. Three prizes are at stake; P25000 for the first, P20000 for the second, and P10000 for the third prize. If you buy a lottery ticket, what is your... more
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Probability

06/03/20

geometry homework

Ellie has a standard deck of playing cards and chooses a card at random. Event A is the probability that she draws a card that is a diamond. Event B is the probability that she draws a card from a... more
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Probability

06/03/20

geometry homework

In a class of 30 students, 15 own an iphone, 10 own an ipad, and 2 own both. What is the probability that a student chosen at random owns either an iphone or an ipad?a. 12/15b. 27/30c. 5/6d. 23/30
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Probability

06/03/20

geometry homework

A bag contains 2 red, 5 blue, and 2 white marblesFind the probability of randomly picking a red marble, keeping the marble, and then picking a blue marble.a. 10/81b. 1/9c. 5/36d. 7/8
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Probability

06/03/20

geometry homework

Given Event A, Event B, and Event C. Event A and Event B, are mutually exclusive. Event A and Event are not mutually exclusive. P(A) = 0.45 P(B) = 0.35 P(C) = 0.25 What is the probability of the... more
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Probability

06/03/20

Geometry Homework

Market research shows that 30% of consumers are likely to purchase an electronic tablet for younger children under age 10. However, only 2% of consumers are likely to buy a laptop for children... more
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