5,395 Answered Questions for the topic probability

Probability

07/16/22

What is the probability that the CDs are in alphabetical order

You own 23 CDs with different titles. You want to randomly arrange 10 of them in a CD rack. What is the probability that the rack ends up in alphabetical order by title?
Follows • 1
Expert Answers •1
Probability

07/16/22

How many different standard plates are possible in this country?
Standard automobile license plates in a country display 1 numbers, followed by 3 letters, followed by 3 numbers. How many different standard plates are possible in this country? (Assume repetitions... more
Follows • 1
Expert Answers •1
Probability

07/16/22

Find the probability that a randomly selected person in a fatal car crash who was ejected from the vehicle was wearing a seat belt
A study showed that 66% of occupants involved in a fatal car crash wore seat belts. Of those in a fatal car crash who wore seat belts, 16% were ejected from the vehicle. For those not wearing seat... more
Follows • 1
Expert Answers •1
Probability

07/16/22

What is the probability that an individual has these symptoms and tests positively actually has COVID-19
The probability that a person with certain symptoms has COVD-19 is 0.81. One test being used to confirm this diagnosis gives positive results for 93% of people with the virus and 3% of those... more
Follows • 1
Expert Answers •1
Probability Math Statistics

07/12/22

i need help with this :))))
Miranda decided to buy a $50,000 term life insurance policy from Palmetto Insurance Company to cover her until she is 55. She is currently 50 years old and in good health. The probability of death... more
Follows • 1
Expert Answers •1
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.
Follows • 1
Expert Answers •1
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
Follows • 1
Expert Answers •1
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
Follows • 1
Expert Answers •1
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
Follows • 1
Expert Answers •1
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
Follows • 2
Expert Answers •1
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
Follows • 1
Expert Answers •1
Probability

07/06/22

Suppose you roll a die 30 times. How many 2s would you expect to get?
Follows • 0
Expert Answers •1
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
Follows • 2
Expert Answers •1
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
Follows • 2
Expert Answers •1
Probability

07/03/22

Probability density

From this density, the probability that Z>1.74 or x<0.02
Follows • 1
Expert Answers •1
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
Follows • 1
Expert Answers •1
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
Follows • 1
Expert Answers •1
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?
Follows • 1
Expert Answers •1
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
Follows • 1
Expert Answers •1
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
Follows • 1
Expert Answers •1
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
Follows • 2
Expert Answers •1
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
Follows • 1
Expert Answers •1
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
Follows • 0
Expert Answers •1
Probability Statistics

06/27/22

What is the probability of getting 0 queens after drawing 7 cards?
Standard 52 card deck with 4 queens.
Follows • 1
Expert Answers •1
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

Follows • 1
Expert Answers •1

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.

OR

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.