5,395 Answered Questions for the topic probability

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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Probability

06/03/20

Geometry Homework

A bag contains 10 red pens, 15 blue pens, and 20 black pens. Joseph will pull a pen from the bag. When Joseph pulls a pen from the bag, how many outcomes are possible?a. 45b. 10c. 15d. 20
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Probability Math Statistics

06/02/20

A worker has 12machines. Every T time, he has a 1/3 change to configure each machine (Each machine has independent chance).What is the probability that he will configure 2 machines in the next T time?
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Probability Math Statistics

06/02/20

An area of 100 acres is getting bombed. Mr X's property has an area of 1 acre. 400 bombs are thrown in to the area, what is the probability that a bomb will hit Mr X's property?
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Probability Math Statistics

06/02/20

A drug is being tested on lab mice. 80% of mice die when injected and 20% of mice can resist this drug. For his research, a scientist needs 5 resistant mice.
What is the probability that the scientist killed 25 mice till he got 5 resistant mice in total?
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Probability Statistics

06/02/20

Probability and statistics

A binary message is transmitted as a signal that is either -1 with probability of 1-p or +1 with probability of p. The communication channel corrupts the transmission with additive Gaussian noise... more
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Probability Statistics

06/02/20

a cube with faces labeled 1 through 6 is rolled. what is p(7)?
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Probability

06/01/20

What is the probability of drawing any suit first, followed by drawing a face card?
Using a standard 52 card deck, find the following probability:if 2 cards are randomly selected, what is the probability of drawing any suit first, followed by drawing a face card? Assume without... more
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Probability Math Algebra 2 Mathematics

06/01/20

A six-sided die is rolled three times. What is the probability of rolling a one on the first role, rolling a three on the second roll, and rolling a number greater than four on the third roll ?
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Probability Math

06/01/20

In a luck race, 100 people are gonna throw 5 dice each. If a person throws 3 or more "6", they win. Out of 100 people, what is the probability that 6 people will win?
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