5,385 Answered Questions for the topic probability

Probability Statistics Mathematics

05/23/21

Help me solve this question please
The results of a survey by a large supermarket show that 35 % of its customers shop online.(a) Six customers are chosen at random. Find the probability that more than three of them shop online.(b)... more
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Probability Math Algebra 1 Algebra 2

05/23/21

Please help with the following Probability Problem
1.Robert's friends assure him that if he asks Kate to marry him, there is an 85% chance that she will say yes. If there is a 55% chance that Robert will summon the courage to ask Kate to marry him... more
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05/22/21

Please Help with the following question involving uniform distribution!
A multiple choice test has five possible answers, labelled A, B, C, D, E. If the position of the correct answer is to be chosen at random, draw a probability histogram for this distribution.What do... more
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Probability Math Algebra 1 Algebra 2

05/22/21

(PLEASE EXPLAIN) How many permutations are there for the following word?
1. RAPUNZELa) How many being with the letter u?b) How many being with the letter e?
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Probability Math Algebra 1 Prealgebra

05/22/21

Independent Event Problem
There are 3 candies, 8 coins, 1 pen, and 4 pieces of paper in a bag. An item is selected at random from the bag. After replacing it, a second item is chosen. Find the probability for the... more
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Probability Math Algebra 1 Prealgebra

05/22/21

How many permutations are there for the following word?
1. RAPUNZEL a) How many being with the letter u?b) How many being with the letter e?
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Probability Statistics

05/22/21

Random variables
The discrete random variable X has the following probability distribution:x -2 0 1 3 4P(X=x) 0.2 0.1 p 0.1 q(i) Given that E(X)=1.7 , find the... more
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Probability Statistics

05/22/21

Probability questions
A rugby club has three categories of membership: adult, social and junior. The number of members in each category, classified by gender, is shown in the table below: Adult Social... more
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Probability Statistics

05/22/21

Statistics question.
The lifetimes of a certain brand of battery have a mean of 45 hours and a standard deviation of 18.Find the probability that the mean lifetime of a random of such 50 batteries will be between 40... more
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Probability Statistics

05/22/21

Statistics question
A drinks machine dispenses coffee into cups. A sign on the machine indicates that each cup contains 50 ml of coffee. The machine actually dispenses a mean amount of 55 ml per cup and 10% of the cup... more
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Probability Logic Algebra Sequence

05/22/21

Can someone help me with figuring this problem out!
A Street has 13 houses in a row as shown in the figure. Some residents in the first house tested positive for COVID-19. The virus spreads in two ways: it can spread to the next house, or jump... more
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Probability

05/22/21

I need help to answer this question
Grabby Food Delivery has two computer systems, namely System A and System B available for processing online orders. All online orders can be processed by either one of the two systems. It is known... more
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Probability Math Algebra 1 Algebra 2

05/22/21

Hypergeometric Question Help!
I would like some help involving creating a question/problem involving hypergeometric distribution, I have to include how a scenario of how a group of people or even just one person, needs to find... more
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Probability Math Algebra 1 Algebra 2

05/21/21

Permutation Question Help!
A group had decided to create a trap using the following objects, 5 pieces of steel, 3 pieces of string and 2 bottles of glue. How many different traps can they create?Illustrate this using a tree... more
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Probability

05/21/21

Please solve the following probabilities
Each of the 50 students in class belongs to exactly one of the four groups A, B, C, or D. The membershipnumbers for the four groups are as follows: A: 5, B: 10, C: 15, D: 20. First, choose one of... more
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Probability

05/21/21

Please i need an answer to the following probabilities

Roll a fair die repeatedly. Let X be the number of 6’s in the first 10 rolls and let Y the number of rolls needed to obtain a 3. (a) Write down the probability mass function of X. (b) Write down... more
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Probability

05/21/21

Please i need an answer to the following probabilities

Roll a fair die repeatedly. Let X be the number of 6’s in the first 10 rolls and let Y the number of rolls needed to obtain a 3. (a) Write down the probability mass function of X. (b) Write down... more
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Probability

05/21/21

Please i need solutions

A biologist needs at least 3 mature specimens of a certain plant. The plant needs a year to reach maturity; once a seed is planted, any plant will survive for the year with probability 1/1000... more
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Probability Math Algebra 1 Statistics

05/21/21

odds question !
the odds in favor of winning a lottery ticket is 5:2. Find the probability of the occurrence of the event. Show all steps
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Probability Math Algebra 1 Algebra 2

05/21/21

Please help with the following mutually exclusive Question!
There are 12 DVDs, 7 video games, 14 CDs, and 3 videotapes on Jaime’s bedroom shelf. If Jaime selects an item at random from the shelf, what is the probability that it is a DVD or a video tape?
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Probability Math Mathematics

05/21/21

Probability question (2)
Three marbles are randomly drawn from a bag containing six white marbles balls and four black marbles.Part a) What is the probability of there being: 3 white marbles. Round your answer to the... more
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Probability Math Mathematics

05/21/21

Probability question

Connor and Tay are each purchasing one raffle ticket. If a total of eleven raffle tickets are sold and two winners will be selected, what is the probability that both Connor and Tay win? Round your... more
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Probability Math Algebra 1 Algebra 2

05/21/21

Please help with the following binomial question!
1.It is estimated that 18% of drivers do not signal while changing lanes.Lisa stands at a stop sign, inspecting the first 30 vehicles to see if they have signaled or not.What are the chances that... more
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Probability Math Mathematics

05/21/21

Find the probability
Find the probability of getting 2 boys in selecting 3 people from 4 boys and 3 girls. The answer must be rounded off to two decimal places.
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Probability Math Algebra 1 Algebra 2

05/21/21

Permutation Question Please Help
How many different ways can 150 guests be divided into 15 groups of 5 for a dance activity at an event?
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