5,395 Answered Questions for the topic probability

03/11/21

Statistics Probability

A manufacturer knows that their items have a normally distributed length with a mean of 17.4 inches, and a standard deviation of 1.4 inches. if 13 items are chosen at random what is the probability... more
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Probability Statistics

03/10/21

need help solving this problem. simplified. please include answer.
In a certain city, 60% of high school students graduate. Of those who graduate, 28% attend college. Find the probability that a randomly selected high school student will attend college.
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Probability

03/10/21

There are 435 seniors at a high school and they are all placed in groups consisting of more than 2 students but fewer than 30 students.
There are 435 seniors at a high school and they are all placed in groups consisting of more than 2 students but fewer than 30 students. Each group is to have an equal number of students and each... more
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Probability

03/10/21

What is the probability that you will draw a Ace card from a standard deck of cards (52)? Your answer should be in simplest fraction form.
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Probability

03/10/21

What is the probability you pick a student in the school and they prefer to use Tik-Tok OR they are a Junior? (Write as a percent rounded to the nearest hundredth)
Classification Tik-Tok Snapchat Total Freshman 345 122 467 Sophomore 289 203 492 Junior 178 109 287 Senior 103 189 292 Total 915 623 1538
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Probability

03/10/21

it long so i put it in the description
.A basketball player has a 60% chance of making each free throw. What is the probability that the player makes exactly three out of six free throws? Write your answer as a decimal number and round... more
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Probability

03/10/21

it long so i put it in the description
An archer has a 25% chance of hitting the bullseye on a target. What is the probability that the archer will hit the bullseye at most three out of five times? Round your percent answer to the... more
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Probability

03/10/21

it long so i put it in the description
An archer has a 25% chance of hitting the bullseye on a target. What is the probability that the archer will hit the bullseye at most three out of five times? Round your percent answer to the... more
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Probability

03/10/21

A bag contains three real diamonds and two fake diamonds. What is the probability that you randomly choose a real diamond? Write your answer as a reduced fraction.
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Probability

03/10/21

Help pls this question is confusing, thank you

Three cards are dealt from a shuffled standard deck of playing cards.What is the probability that the three cards dealt are, in order, an ace, a face card, and an 8? (A face card is a jack, queen,... more
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Probability

03/10/21

A pair of dice are tossed. What is the probability that doubles are rolled, given that the sum on the two dice is less than 8? (Round your answer to three decimal places.)
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Probability

03/09/21

Let X be the sum of the two bills selected. Then P(X>16)?

A box contains one $5 bill, three $10 bills, and four $20 bilis. A bill is selected at random, and it is not replaced: then a second bill is selected at random. Let X be the sum of the two bills... more
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Probability

03/09/21

What is the probability that at least one of a pair of fair dice lands of 5, given that the sum of the dice is 9?
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Probability

03/08/21

what is the probability of guessing correctly at least six of the ten answer in a true false objective test
In your probability solutions (1-252/1024)÷2 = 772/2048 how ?Please explain it.
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Probability Business

03/08/21

probability applications of count
mixed in a drawer are 4 blue socks, 8 white socks, and 8 gray socks. you pull out two socks, one at a time, without looking. find the probability of getting 2 socks of the same color.
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Probability

03/08/21

The random variable X has a binomial distribution with n= 10 and p= 0.5. Determine the following probabilities: (a) P(X=5), (b) P(X≤2), (c) P(X≥9), (d) P(3≤X<5)
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Probability Mathematics

03/07/21

A bag contains 12 marbles: 5 are orange, 3 are blue, and the rest are red. If one marble is selected at random from the bag, what is the probability that it will be red or blue?

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03/07/21

Standard Deviation

A random variable is normally distributed with mean 96.1 and a standard deviation of 7.9. what value is 2 standard deviations about the mean
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03/07/21

Standard Deviation

A random variable is normally distributed with the mean 26.2 and a standard deviation 19.6. what value is 2 standard deviations below the mean?
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Probability Mathematics

03/07/21

In Happy Hills Pond, 2 out of 5 fish are goldfish. If 40 fish were randomly chosen from the pond, which is most likely the number of goldfish chosen?

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Probability Math Statistics

03/07/21

Continuous Random variables
A continuous ransoms variable is normally distributed. The probability that a value in the distribution is greater than 54 is 0.4478. Find the probability that a value in the distribution is less... more
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Probability Math Sat Math Maths

03/06/21

Simple permutation math urgent help requested.
Determine how the letters of the word ‘Equation’ can be arranged by placing the consonants in odd places?(I know the answer 2880, I need to know how to do this type of maths, please show step by step) more
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Probability Math

03/06/21

if there is 176 people in an event and only 10 get chosen,what is the probability that i get chosen
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Probability

03/06/21

If you roll a PAIR of dice, what is P(<7, 2 dice)? Give your answer in decimal form.

Now that you have drawn the dice table, find the probability. These problems use some abbreviations: P(4, 2 dice) means what is the probability of getting a 4 when you roll two dice. 
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Probability

03/05/21

Probability question
When we find conditional probabilities, do we need to check to see if they are mutually exclusive or if they are independent? 
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