5,385 Answered Questions for the topic probability

Probability Math Statistics

07/10/22

Probability of certain cards in 10 card poker
Find the probability of being dealt seven clubs and three cards with one card of each other remaining suit in 10​-card poker.
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Probability Math Statistics

07/10/22

What is the probability of these two scenarios?
A shipment of 13 microwave ovens contains 3 defective units. A restaurant buys three of these units. What is the probability of the restaurant buying at least two nondefective​ units?The... more
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Probability Statistics Data Science

07/10/22

How to calculate the likelihood?
We will define the following probabilities for a PCR test:p - The probability that a pcr test of a **sick** person, will show us a positive result.q - The probability that a pcr test of a... more
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Probability Math Statistics

07/09/22

What is the probability of tossing head and then rolling a number greater than two
A coin is tossed in a six sided dice number one through six is rolled. Find the probability of tossing ahead and then rolling a number greater than two. The probability of tossing ahead and then... more
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Probability

07/08/22

Construct the 95​% confidence interval estimate of the mean wake time for a population with the treatment. enter your response here min<μ<enter your response here min ​
A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older subjects. Before​ treatment, 16 subjects had a mean wake time of 104.0 min. After​ treatment, the... more
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Probability

07/07/22

Probability distribution game
I want you come up with a game. I want your game to have at least 8 different possible monetary outcomes. You are going to charge people money (you decide how much) to play the game... more
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Probability

07/06/22

Suppose you roll a die 30 times. How many 2s would you expect to get?
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Probability Statistics

07/06/22

This problem outlines a proof of the following equalities?
if ˆX = aX + b and ˆY = cY + d, then a) pˆX,ˆY = pX,Y and b) Cov[ˆX,ˆY] = acCov[X,Y](a) Show that ˆX −E[ ˆX] = a(X −E [X]), ˆY −E[ ˆY ] = c(Y −E [Y ]). (b) Use part (a) to show that Cov [ ˆX, ˆY ]... more
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Probability

07/04/22

RNG percentage ratios based on completion time
so theres 2 scenarios that can completed in the sameframe of time - but both have different (random number generator)possible chances for a targeted reward#1 - task that takes the whole block of... more
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Probability

07/03/22

Probability density

From this density, the probability that Z>1.74 or x<0.02
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Probability Statistics

07/03/22

Uniform Distribution
The lengths of a professor's classes has a continuous uniform distribution between 50.0 min and 52.0 min. If one such class is randomly selected, find the probability that the class length is... more
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Probability Math Algebra 1 Algebra 2

07/03/22

It's urgent plz
Consider the name as MARIAHOSSAIN and Roll number as 21101164.1.Find the total number of arrangements from the letters of your name taken all at a time without changing the the positions of vowels... more
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Probability

07/03/22

A box contains 2 brown cards, 3 black cards, 4 blue cards, and 1 white card. What is the probability of randomly choosing a black card AND THEN a blue card if no cards are replaced?
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Probability Math Sat Math Act Math

06/30/22

Tricky probability question
A table-tennis championship for 2n equally good players is organized as a knock-out tournament with n rounds, the last round being the final. Two players are chosen at random. Calculate... more
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Probability Math Sat Math Act Math

06/30/22

Hard probability question
Four mice are chosen (without replacement) from a litter, two of which are white. The probability that both white mice are chosen is twice the probability that neither is chosen. How many mice are... more
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Probability Statistics

06/30/22

Suppose that x is a normal random variable with u=5 and o=2. What is the probability that the absolute value of x is at least 8.74?
µ=5σ= 2
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Probability

06/29/22

Need help on the two biased coin problem
Two biased coins are tossed 126 times. 36 trials are both heads and 44 trials are both tails out ofthese 126 trials. Among the rest, 16 trials have head in the first coin while tail in the second... more
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Probability Algebra 2 Statistics

06/28/22

To create an entry​ code, you must first choose 2 letters and​ then, 6 ​single-digit numbers. How many different entry codes can you​ create?
It must be a whole number
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Probability Statistics

06/27/22

What is the probability of getting 0 queens after drawing 7 cards?
Standard 52 card deck with 4 queens.
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Probability

06/26/22

In a large population, 53% of the people have been vaccinated. If 3people at random are selected, what is the probability that at least one of them has been vaccinated If

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Probability Math Python

06/23/22

Python Question regarding normal distribution probability
Suppose the annual rainfall, in inches, in some region is normally distributed with μ=10 and σ=5. What is the probability that it takes (strictly) more than 10 years before a year with 20 inches of... more
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Probability Math

06/23/22

Uniform Distribution Probability Question
Suppose trains heading for destination A arrive at the station every 15 minutes, starting at 7 A.M., while trains heading for destination B arrive at the station every 15 minutes, starting at 7:05... more
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Probability

06/22/22

Statistics and Probability
Suppose that the distance of fly balls hit to the outfield (in baseball) is normally distributed with a mean of 250 feet and a standard deviation of 42 feet. Let X = distance in feet for a fly... more
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Probability

06/22/22

Dice probability
In a game of chutes and latters, suppose you need a 4 to win the game. You are rolling a 6-faced fair die. What is the probability that you will win the gam on the third try?
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Probability

06/16/22

Probablity of doughnuts
A tray has 16 doughnuts, 9 of which contain raspberry jam and 7 of which contain ... jam and then Alexander randomly selects a doughnut with lemon curd?
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