5,385 Answered Questions for the topic probability

Probability Maths Basic Math

04/19/21

Basic quen on probability

Quen: An ant farm contains both red and black ants. A particular passage in the farm is so narrow that only 1 ant can get through at a time. If 4 ants follow each other through the passage, how... more
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Probability Estimation

04/17/21

The data set below shows the amount of trash generated by ten households (in pounds per day). Assume that the population is normally distributed.

The data set below shows the amount of trash generated by ten households (in pounds per day). Assume that the population is normally distributed.... more
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Probability

04/17/21

Suppose in a particular college, 60% of the student population is female.

Suppose in a particular college, 60% of the student population is female. (a) Calculate the probability that a class of 10 students will have exactly four females. (b) Calculate the probability... more
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04/17/21

PROBABILITY, R, STOCHASTIC PROCESSES, BRANCHING PROCESSES
Do you have a friend who seems to answer every single message of yours by giving a very extensive answer? Are you, on the other hand, a person that replies to a message cryptically, but in several... more
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Probability

04/17/21

the percentage of Americans having type B blood is 11%. If four Americans are chosen at random and independently, determine the probability that Exactly one of the four has blood type B
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Probability

04/17/21

A pet store has 12 ​puppies, including 4 ​poodles, 5 ​terriers, and 3 retrievers.

A pet store has 12 ​puppies, including 4 ​poodles, 5 ​terriers, and 3 retrievers. If Rebecka selects one puppy at​ random, the pet store replaces the puppy with a puppy of the same​ breed, then... more
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Probability Math Algebra 1 Algebra 2

04/17/21

Find the mean and standard deviation of a normal distribution that approximates a binomial distribution consisting of 12 trials with 0.42 probability of success on each trial.
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Probability Math Algebra 1 Algebra 2

04/17/21

A normal distribution has a mean of 10 and a standard deviation of 1. Find the probability that a randomly selected value is between 8 and 11.
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Probability Math Algebra 1 Algebra 2

04/17/21

Calculate the probability of k successes for a binomial experiment consisting of n trials with the probability p of success on each trial: k ≥, n=5, p=0.2
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Probability Math Algebra 1 Algebra 2

04/17/21

Calculate the probability of picking 8 cards from a stand 52-card deck, with replacement, and getting exactly 3 spades.
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04/16/21

Problem on probability

Three cards are selected at random without replacement from a deck which contains 3 red, 3blue, 3 green, and 3 black cards. Give a sample space for this experiment and define the events:A: all the... more
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Probability

04/16/21

Basic Probability question

A cigarette company packs 1to 5 different slips, labelled a, b,c,d,e, respectively, with each pack it produces. Suppose that you buy 2 packs of cigarettes of this brand. What is a good sample space... more
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Probability Statistics

04/16/21

In the rolling or two fair dice calculate the following

P(Sum of the two dice is 9)=P(sum of the two dice is 6)=P(sum of the two dice is not 7)=P(sum of the two dice is 5 or 8)=P(sum of the two dice is not 4 and not 10)=
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Probability Math Statistics

04/15/21

Given that there are 1, 485 people you need to take for a survey for their drink preferences. Determine the sample if the error tolerance is 5%
how to calculate this help
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Probability Math Spinner White

04/14/21

Probability Question
A spinner has 10 equal pieces, 4 white, 3 black and 3 gray. Linda spun it 50 times. She got 17 White, 14 Gray, and 19 black. Assuming that the spinner is fair, compute the theoretical probability... more
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Probability

04/13/21

Find the probability that the yearly energy consumption of a randomly selected house is more than 1100 kWh.
yearly energy consumption levels for houses are normally distributed with a mean of 1200 kWh and a standard deviation of 200 kWh. Find the probability that the yearly energy consumption of a... more
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Probability Geometry

04/13/21

A bowl contains 25 balls numbered 1 to 25. A ball is drawn and its number is noted. Without replacing the first ball, another ball is drawn.

The probability that the numbers on both balls are odd numbers is___
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Probability Statistics

04/13/21

confidence interval question
In an experiment to assess the effects on rats of exposure to cigarette smoke, 11 animals were exposed and 11 control animals were not exposed to smoke from unfiltered cigarettes. At the end of the... more
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Probability

04/12/21

What is the probability a student will get cold food from  Location A
In a particular day, if a  student eats in campus, 50% of the time will be in the  Location A, 30% of the time at the Location B, and 20% of the time at Location C. If he eats at the  Location A,... more
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Probability Statistics

04/12/21

Express the confidence interval 67.9 % ± 5.9 % in the form of a trilinear inequality.
Express the confidence interval 67.9%±5.9% in the form of a trilinear inequality._% <p< %_
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Probability Statistics

04/12/21

Assume that a sample is used to estimate a population proportion p. Find the 98% confidence interval for a sample of size 280 with 126 successes
Assume that a sample is used to estimate a population proportion p. Find the 98% confidence interval for a sample of size 280 with 126 successes. Enter your answer as an open-interval (i.e.,... more
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Probability Statistics

04/12/21

Assume that a sample is used to estimate a population proportion p. Find the 99.5% confidence interval for a sample of size 87 with 37.9% successes.
Assume that a sample is used to estimate a population proportion p. Find the 99.5% confidence interval for a sample of size 87 with 37.9% successes. Enter your answer as an open-interval (i.e.,... more
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Probability Statistics

04/12/21

How large of a sample size is required?
You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately p∗=27%. You would like to be 98% confident that... more
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Probability

04/11/21

Statistics and probability
a programmer plans to develop a new software system. in planning for the operating system that he will use, he needs to estimate the percentage of computers that use a new operating system. how... more
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Probability

04/11/21

A person buys a single ticket, what will their expected net gain be?
A lottery consists of 5,000 tickets of $ 10 each. 4000 tickets only were sold and among them are: 300 tickets which bring 50 $ each; 200 tickets that bring $ 100 each and 100 tickets that bring $... more
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