5,381 Answered Questions for the topic probability

Probability Statistics

10/11/22

Please help me to find the probability of this question

Suppose that about 85% of graduating students attend their graduation. A group of 21 graduating students is randomly chosen.Find the probability that 15 or 16 attend.
Probability Statistics

10/11/22

Please help me find the probability of this questions

It has been estimated that only about 30% of California residents have adequate earthquake supplies. Suppose you randomly survey 11 California residents. We are interested in the number who have... more
Probability

10/11/22

A delegation of 3 is selected from a city council made up of 3 liberals and 5 conservatives. What is the expected number of liberals in the​ delegation?

A delegation of 3 is selected from a city council made up of 3 liberals and 5 conservatives. What is the expected number of liberals in the​ delegation?
Probability Statistics

10/10/22

In a club with 8 junior members and 14 senior​ members, a ​5-member committee will be randomly chosen. Find the probability that the committee contains at least 4 senior members.

Also, what's the probability that the committee will include 4 senior members?
Probability

10/08/22

Which combination of bills is possible?

Jason has an assortment of bills in his wallet, including $1 bills, $5 bills, $10 bills, and $20 bills. If he reaches into his wallet and pulls out a bill at random, the probability of pulling out... more
Probability

10/06/22

Probability question regarding random assignment

Let's say there are 24 study abroad students in Europe, and they are to be placed in host homes in the U.S. in groups of 3. The assignments will be determined by a lottery system, where the names... more
Probability

10/06/22

55% of all the town's residents own a dog and 66% own a cat. Of the dog owners 46% also own a cat. If a town resident is chosen at random find: (round to 4 decimal places where possible)

55% of all the town's residents own a dog and 66% own a cat. Of the dog owners 46% also own a cat. If a town resident is chosen at random find: (round to 4 decimal places where possible)a. P(Own a... more
Probability

10/06/22

Counting our ways to probability

A college’s basketball team will play 29 games next winter. Each game can result in one of 2 outcomes: a win or lose. Find the possible number of outcomes for the season record
Probability Statistics

10/06/22

Introduction to statistics

Suppose a population has µ = 8 and δ= 3. Suppose a random sample of n= 36 is selected. What is the probability that the sample mean is between 7.8 and 8.2?
Probability Statistics

10/06/22

Statistics and probability distribution

Hailstorms are common phenomena in parts of a certain country. From past experience it has been shown that in a forestry plantation, there is about an 80% chance that certain tree... more
Probability

10/06/22

A pair of dice is rolled, what is the probability of each of the following events.

a.     A sum of at least 7 shows upb.     A sum of most 8 appearsc.     One number is three or the other number is evend.     Both numbers are even and greater than or equal to 4,
Probability Math Algebra 1

10/04/22

How do I solve this problem for Math 108 Project

Given the female adults and female seniors at this reunion decide to take the children and teens to a Disney movie, what is the probability of individuals with at least 5 years of schooling going... more
Probability

10/04/22

If 7 people are asked to choose two items out of 6 items, what is the probability that all of them will pick the same item?

Note that in this case, each person is required to have picked the same item in either of their two choices.
Probability

10/03/22

Probability Question

An article reports that men over 6 feet tall earn more than men under 6 feet, with these numbers: average 6 foot plus male’s salary $55,000, average male’s salary under 6 foot tall of $47,000, with... more
Probability

10/03/22

Probability Question

Two owners of a cattle ranch, Robert and Val, want to find the average weight for the ranch’s 200 cows. Instead of weighing all of the cows: Robert weighs 25 cows and gets an average weight of... more
Probability

10/03/22

Using a standard six-sided die, Janice rolled either a 2 or a 5on the last 6 rolls of the die. What is the probability of Janice rolling a 2or a 5 on her 7th toss of the die?

Using a standard six-sided die, Janice rolled either a 2 or a 5on the last 6 rolls of the die. What is the probability of Janice rolling a 2or a 5 on her 7th toss of the die?
Probability Statistics

10/03/22

Suppose that E and F are two events and that N(E and F)=430 and N(E)= 690. What is P(F|E)?

HELPPP MATH 120!!!!
Probability

10/01/22

Given that a box has 3 blue marbles, 2 red marbles, and 4 yellow marbles, use the probability formulas to answer the following questions.

Given that a box has 3 blue marbles, 2 red marbles, and 4 yellow marbles, use the probability formulas to answer the following questions. Reduce all fractions. Use / as the fraction bar and do not... more
Probability Math

10/01/22

The serial number on a bill consists of a letter followed by seven digits and then a letter. How many different serial numbers are possible, given the letters and digits cannot be repeated?

The serial number on a bill consists of a letter followed by seven digits and then a letter. How many different serial numbers are possible, given the letters and digits cannot be repeated?

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