5,341 Answered Questions for the topic probability

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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Probability

05/20/21

What is the probability of first drawing a black card, then a three, and then a red card? Do not round your intermediate computations. Round your final answer to four decimal places.
In a standard deck of 52, suppose a card is drawn at random from a standard deck. The card is then shuffled back into the deck. Then for a second time, a card is drawn at random from the deck. The... more
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Probability Math Algebra 1 Algebra 2

05/20/21

Urgent Help involving Odds!
Could someone explain what the odds against and the odds in favor mean? I'm still a little confused, as well as when it is stated for example, the odds in favor of winning an election are 2 to 5 or... more
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Probability Math Statistics

05/20/21

A certain regression line equation has the slope equal to....
A certain regression line equation has the slope equal to 795.72 and an intercept that is equal to 567.32. What will be the predicted score for the dependent variable if the independent variable is... more
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Probability Statistics

05/20/21

Giving a test to a group of students, the grades and gender are summarized below
A B C TotalMale 4 11 15 30 16 10 18 44 20 21 33 74If one student is chosen at random,Find the probability that the student was female:   Find the... more
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Probability Math Statistics

05/20/21

normal approximation with continuity correction
n =30 and p=.6, find P (x≤ 15) (use normal approximation with continuity correction)
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Probability

05/20/21

The average number of kilos of meat climbed up to 300 pesos with a standard deviation of 50 pesos. Assume that the variable is normally distributed

1.what is the probability that a public market selcted randomly will set their price ti more than 28opesos;(useP(×<325).2.Find the probability that a public market selected randomly will set... more
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Probability Math Data Distribution

05/19/21

Binomial Distribution Question?
Studies show that 15% of people do not signal when changing lanes. Bob stands at a stop sign and checks the first 20 cars to see if they signal or not. What if the probability that no more than 3... more
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