5,385 Answered Questions for the topic probability

Probability

10/27/21

What is covariance and correlation between two random variables regarding coin flips?
So say Coin A has probability 1/3 of heads and Coin B has probability 2/3 of heads. You pick one of the two coins at random (50% chance of A or B) then flip that coin twice. If X is 0 if tails on... more
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Probability Math

10/27/21

Approximately 10% of men have a type of color blindness that prevents them from distinguishing between red and green. If four men are selected at random:
A). What is the probability that none of them will have color blindness?B). What is the probability that at least one of them will have color blindness?
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Probability Math Calculus Precalculus

10/27/21

What is the Logical Equivalence by following the data below?
Use truth tables to show if the two statements are logically equivalent or not.(p↔~q) ≡ (p ˄~q) ˅ (~p ˄ q)
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Probability Math

10/26/21

Basic Rules of Probabilities

In the rolling of two fair dice calculate the following: P(Sum of the two dice is 5)= P(Sum of the two dice is 8)= P(Sum of the two dice is NOT 9)=P(Sum of the two dice is 4 or 6)= P (Sum of the... more
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Probability Statistics

10/26/21

The probability a​ male's growth plates fuse before age 17
The ability to determine the age of some individuals can be difficult if there are not quality government records of birth. Bone growth takes place at the growth plates at the end of long bones.... more
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Probability

10/25/21

The time it takes a person to wash the dishes is uniformly distributed between 7 minutes and 16 minutes.

The time it takes a person to wash the dishes is uniformly distributed between 7 minutes and 16 minutes. What is the probability that a randomly selected event of washing dishes will take a person... more
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Probability Statistics

10/25/21

Three fair dice are rolled. Let the random variable X be the number of die that are showing a roll of 1. Complete the probability distribution table. (Give probabilites to three decimals)

x P(X=x)0123
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10/24/21

How to find the Var(X) for a sum of a rolled die and a 3 sided spinner?
A fair 6-sided die has the numbers −1, −1, 0, 0, 1, 2 on its faces. A fair 3-sided spinner has edges numbered −1, 0, 1. The die is thrown and the spinner is spun. The number on the uppermost face... more
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Probability Statistics

10/23/21

Suppose that 25% of all voters prefer Candidate A. If 6 people are chosen at random for a poll, what is the probability that exactly 2 of them favor Candidate A?

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Probability

10/22/21

Probability Question for a research project
The probability of winning the PowerBall Jackpot is one in 292,201,338. What is the probability of winning it 5 times in a row?7 times in a row?10 times in a row?
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Probability

10/19/21

Random Variables Probability
Compute probabilities on random variables:a- and compute the probablities X= xb- compute the probabilities X<=x
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Probability Statistics

10/19/21

Use the IQR to determine if any of the data in the data set are outliers. {23,80,43,23,0,20,23,23,20,28} Any data value less than or greater than are outliers.

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Probability Statistics

10/18/21

Complete the probability distribution table. (Report probabilities accurate to 4 decimal places.)Find the mean of this probability distribution. (Appropriate rounding rules apply.)

The Sky Ranch is a supplier of aircraft parts. Included in stock are 6 altimeters that are correctly calibrated and two that are not. Three altimeters are randomly selected without replacement. Let... more
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Probability Statistics Distribution

10/18/21

Complete the probability distribution table. (Report probabilities accurate to 4 decimal places.) Find the mean of this probability distribution. (Appropriate rounding rules apply.)

The Sky Ranch is a supplier of aircraft parts. Included in stock are 6 altimeters that are correctly calibrated and two that are not. Three altimeters are randomly selected without replacement. Let... more
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Probability Math Statistics

10/16/21

Statistics Probability

Thirty (30) students registered for a Statistics class; ten (10) men and twenty (20) women. Five (5) of the men and two (2) of the women are from out of town. For the following questions determine... more
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Probability Math Statistics Logic

10/15/21

What is the group size that will accomodate a class of 27 students based on this problem below?
A student-teacher wants to divide a class into groups to work on a project. He'd like to have somewhere between 4 and 6 students in each group and wants every group to have the same number of... more
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Probability

10/15/21

Assume the cans of coke
Assume that cans of Coke are filled so that the actual amounts are normally distributed with a mean of 12.00 oz and a standard deviation of 0.11 oz Find the probability that a sample of 5 cans will... more
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Probability

10/13/21

MATH PLZ HELP me

You pick a card at random, put it back, and then pick another card at random. 4 5 6 7 What is the probability of picking a 4 and then picking a number greater than 5?Write your answer as a percentage. more
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Probability

10/13/21

An ordinary (fair) die is a cube with the numbers 1 through 6. Imagine that such a die is rolled twice and the face values of the two rolls are added together. Event A: the sum is greater than 8.

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Probability Statistics

10/11/21

Statistics Probability Distribution

The Acme Company manufactures widgets. The distribution of widget weights is bell-shaped. The widget weights have a mean of 46 ounces and a standard deviation of 10 ounces.Use the Empirical Rule,... more
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Probability Math Statistics

10/11/21

A probability questions with a few factors (pure curiosity, not homework)
What is the probability of two people who were born in different states (let’s call them N and C) having the same birthday (June 10) and their mothers also have the same birthday (January 13).... more
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Probability

10/10/21

help me please I have a 48 in math
A shipment of 11 printers contains 3 that are defective. Find the probability that a sample of size 3​, drawn from the 11​, will not contain a defective printer.
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Probability

10/10/21

I don't know how to solve it. It has to be rounded to the nearest thousandth as​ needed
A container contains 6 diesel engines. The company chooses 4 engines at​ random, and will not ship the container if any of the engines chosen are defective. Find the probability that a container... more
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Probability Statistics Act Math

10/09/21

What is the probability that the selected garment is a sock?
Tomas enters his darkened room and randomly selects a garment from achest of drawers with two drawers. One of the drawers has 6 socks and 6 T-shirts and theanother drawer has 2 socks and 3 shorts.
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Probability

10/08/21

What is a good way to resolve this?
The random variable X has a probability density function fX (x) = 1/3 δ(x)+ 2/3 δ(x−2). Another random variable, Y , has a probability density function fY (y) = 1/2 δ(y) + 1/2 δ(y − 3). X and Y... more
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