5,341 Answered Questions for the topic probability

Probability Math

10/21/23

Probability question
Hello, my question is about probabilities from a game called "Deceit". Here are the premises. 6 players, 2 unknow infected players among them. Each one has therefore 1/3 chance of being infected... more
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Probability

10/20/23

Probability word problem
A company estimates that 0.4% of their products will fail after the original warranty period but within 2 years of the purchase, with a replacement cost of $400.If they offer a 2-year extended... more
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Probability Statistics

10/20/23

Probability four decimal places

assume that when adults with smartphones are randomly selected 49% use them in meetings or classes if 8 adult smartphone users are randomly.selected find the probability that exactly 6 of them use... more
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Probability Statistics

10/18/23

I need the answer to this please?
Determine the area under the standard normal curve that lies to the left of (a) Z=-1.67, (b) Z=-1.35, (c) Z=-1.69, and (d) Z=-0.93.
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Probability Math Business Algebra 2

10/18/23

According to statistics reported on CNBC, a surprising number of motor vehicles are not covered by insurance.
Sample results, consistent with the CNBC report, showed 26 of 181 vehicles were not covered by insurance.a. What is the point estimate of the proportion of vehicles not covered by insurance (to 4... more
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Probability Statistics

10/17/23

I need an answer to this question please?
An elevator has a placard stating that the maximum capacity is 4100lb-27 passengers. So, 27 adult male passengers can have a mean weight of up to 4100/27=152 pounds. Assume that weights of males... more
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Probability Math Business Calculus

10/17/23

Relationships of Probability
High school seniors with strong academic records apply to the nation’s most selective colleges in greater numbers each year. Because the number of slots remains relatively stable, some colleges... more
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Probability Statistics

10/16/23

I need help with this question please?
Find the indicated probability using the Central Limit Theorem. From 1975 through 2020, the mean annual gain of the Dow Jones Industrial Average was 652 . A random sample of 33 years is selected... more
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Probability Statistics

10/16/23

I need help with this question please?
Assume that adults have IQ scores that are normally distributed with a mean of 101.5 and a standard deviation 21.4 . Find the first quartile Q_(1), which is the IQ score separating the bottom 25%... more
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Probability

10/15/23

Flip a fair coin repeatedly until you get a head. If you repeat this scenario five times, what are the chances that you’ll need the exact same number of flips each time to get that first head?
Imagine a scenario where you flip a fair coin repeatedly until you get a head. If you repeat this scenario five times, what are the chances that you’ll need the exact same number of flips each time... more
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Probability Math Statistics

10/11/23

Probability Analysis of Opposition to Government-Controlled Health Plans
In a May, 2009 Rasmussen Reports survey, 58% of U.S. adults surveyed opposed "any kind of government-controlled health plan if it meant they had to change their own insurance company". We will... more
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Probability

10/08/23

shape of the distribution
The shape of the distribution of the time required to get an oil change at a ​20-minute ​oil-change facility is skewed right.​ However, records indicate that the mean time is 21.1​, and the... more
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Probability

10/06/23

A point (x, y) is to be selected from the square S containing all points (x, y) such that 0 ≤ x ≤ 1 and 0 ≤ y ≤ 1. Suppose that the probability that the selected point will belong to each specified..
A point (x, y) is to be selected from the square S containing all points (x, y) such that 0 ≤ x ≤ 1 and 0 ≤ y ≤ 1. Suppose that the probability that the selected point will belong to each specified... more
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Probability

10/04/23

Probability of a spinner and a coin
A spinner has 20 sections 14 yellow and 6 are blue, the spinner is spun, at the same time a coin is tossed, what is the probability the spinner lands on blue and the coin is tail?
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Probability Statistics

10/04/23

Suppose that events 𝐴, 𝐵, and 𝐶 are independent. Use the definition of independence to show that 𝐴 and 𝐵 ∪ 𝐶 are independent.
. Suppose that events 𝐴, 𝐵, and 𝐶 are independent. Use the definition of independence to show that 𝐴 and 𝐵 ∪ 𝐶 are independent.
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Probability

10/02/23

Probability Sock Problem

A drawer contains n different and distinguishable pairs of socks (a total of 2n socks). A person randomly selects 2r of the socks, where 2r < n.a) What is the probability of having no matches?b)... more
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Probability Discrete Math

09/28/23

Prove the Inequality a/b + b/a ≥ 2 for a, b ∈ ℝ⁺
Let a, b be real numbers in ℝ⁺ (that is, a > 0 and b > 0). Prove the inequality:a/b + b/a ≥ 2
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Probability Statistics

09/28/23

Understanding a Piecewise Probability Density Function and Deriving Its CDF
I have a piecewise Probability Density Function (PDF) defined as follows:h(x) = { 0 if x < 1 1.5 * (x - 1)^2 if 1 <= x < 2 1.5 * (3 - x)^2 if 2 <= x < 3 0 if... more
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Probability Statistics

09/23/23

You toss a fair coin 4 times. What is the probability that: a. you get all Tails?  b. you get at least one Head? 
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Probability Statistics

09/23/23

In a large population, 60% of the people have been vaccinated. If 3 people are randomly selected, what is the probability that AT LEAST ONE of them has been vaccinated?
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Probability Statistics

09/23/23

A dice is rolled 4 times. What is the probability of showing a 2 on every roll?
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Probability

09/20/23

Probability Question
Suppose a jar contains 12 red marbles and 36 blue marbles. If 2 marbles are randomly chosen from the jar at the same time, find the probability that both marbles are red. Round your answer to four... more
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Probability

09/20/23

Use the additive law of probability if possible to solve the following problem
A monkey is to demonstrate that she recognizes colors by tossing one red, one black, one white ball, one orange ball, and one purple ball into boxes of the same respective colors, one ball to a... more
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Probability

09/18/23

Question in description help quick please!!!
20 families selected to take part in a trea-sure hunt consist of a mother, father, son, and daughter.Assuming that they look for the treasure in pairs that arerandomly chosen from the 80... more
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09/17/23

Grade 7 Math Help Needed ASAP!
Question: Two standard dice are rolled. The product of the two numbers rolled is calculated. What is the probability that the ones digit of this product is 0?Given Options(A) 11/36(B) 2/9(C)... more
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