5,341 Answered Questions for the topic probability

Probability

09/23/22

Probability and statistics

How many different ID cards can be made if there are five digits on a card and no digit can be used more than once? What if digits can be repeated?Part 1 of 2There are different ID cards that can... more
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Probability

09/23/22

Sets and probability

LetU=126.27, 28, 29, 30, 31, 32, 33, 34, 35)A = (29, 30, 31, 32)B = (126,28, 30, 32, 34)C= (27, 29, 30, 34, 35)Find the set.(A' U B)' U C' =
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Probability

09/23/22

Probability and statistics

How many different ways can four types of laser printers be displayed on a shelf in a computer store?There are [ ]different ways to display the four types of laser printers on a shelf
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Probability Statistics

09/23/22

Probability and statistics

Diane is putting 12 colored light bulbs into a string of lights. There are 3 vellow light bulbs, 6 blue light bulbs, and 3 orange light bulbs. How many distinct orders of light bulbs are there if... more
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Probability Statistics

09/23/22

Probability and statistics

(a) There are 17 appetizers avallable at a restaurant. From these, Torn is to choose 13 for his party.How many groups of 13 appetizers are possible?(b) A certain committee consists of 18 people.... more
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Probability

09/23/22

Probability and statistics

A nursery advertises that it has 16 elm trees for sale. Unknown to the nursery, 5 of the trees have already been infected with Dutch elm disease and will die within a year. (Hint: The buying of... more
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Probability Statistics

09/23/22

Probability and statistics

A survey found that 37% of people earning between $30,000 and $75,000 said that they were very happy. If 5 people are selected at randorn, find the probability that at most 1 person who earns... more
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Probability Statistics

09/19/22

Probability (Intro, Mult/Add Rules, & Counting) Exercises
Pollsters are concerned about declining levels of cooperation among persons contacted in surveys. A pollster contacts 102 people in the 18-21 age bracket and finds that 87 of them respond and 15... more
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Probability Math

09/14/22

Quadratic Polynomial Profit Problem...please help
For a certain company, the cost for producing x items is 55x+300 and the revenue for selling x items is 95x−0.5x2.A) set up an expression for the profit from producing and selling x items.B) find... more
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Probability Statistics

09/12/22

probability and stats
Giving a test to a group of students, the grades and genders are summarized below. A B C Total Male 17 20 12 49 Female 2 3 15 20 Total 19 23 27 69 If one student is chosen at random,find... more
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09/10/22

Applied Probability & Information Theory - Joint Entropies
A child’s toy contains two windows in each of which a clown’s face appears when a button is pressed. The clown may be either smiling or crying. The design is such that the probability of each... more
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09/10/22

Jensen’s Inequality & Strictly convex functions
Using the Jensen’s Inequality to show that f(x) = x 2 is strictly convex function.
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Probability Statistics

09/10/22

Probabilistic Independence
Explain what it is meant by two random variables X and Y are probabilistically independent.
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Probability Math Statistics

09/10/22

Lottery Probability Gains and Losses
The LotLot Lottery has a game called pick 4 numbers from 1 to 9, where player pays 50 pesos. If the 4 numbers come up in any order, then the player wins 6,300 pesos. Then the expected amount of... more
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Probability

09/07/22

How do I find P(heart or red) in four decimal places
P(heart or red)=
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Probability Statistics

09/06/22

If a green jelly bean is selected from the bag, what is the probability that the transferred jelly bean was green?
A box has 5 blue and 2 green jelly beans. A bag has 2 blue and 5 green jelly beans. A jelly bean is selected at random from the box and placed in the bag. Then a jelly bean is selected at random... more
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Probability

09/05/22

Find the probability that exactly two cells remain empty
Twenty balls are placed random into four cells. Find the probability that exactly two cells remain empty
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Probability

09/05/22

How many mice are there in a litter?

Six mice are choosen (without replacement) from a litter containing three white mice. The probability that both white mice are chosen is twice the probability that neither is chosen. How many mice... more
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Probability

09/05/22

Twenty balls are placed in random into four cells. Find the probability that exactly two cells remain empty
Twenty balls are place in random into four cells. Find the probability that exactly two cells remain empty
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Probability

09/05/22

Suppose a jar contains 14 red marbles and 27 blue marbles. If you reach in the jar and pull out 2 marbles at random at the same time: find the probability that both are red
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Probability

09/03/22

The spinners alongside are each spun once. Find the probability that the spins are the same, colour.
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Probability Math

09/03/22

Probability of a Sample population
A survey of 500 randomly selected customers based on their expenditure patterns was carried out and the data were found to be normally distributed with a mean of N50 and a standard... more
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Probability

08/31/22

Probability add and multiply
A jar contains 10 red marbles numbered 1 to 10 and 12 blue marbles numbered 1 to 12. A marble is drawn at random from the jar. Find the probability of the given event, please show your answers as... more
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Probability

08/27/22

Probability work
An experiment consists of selecting a ball from a bag and spinning a coin. The bag contains 5 red balls and 7 blue balls. A ball is selected at random from the bag, it's colour is noted and then... more
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Probability Statistics

08/21/22

Probability Question
A baker put 500 raisins into dough, mixed well, and made 100 cookies. You take a random cookie. What is the probability of finding at least 4 raisins in it? (Hint: use Poisson approximation to the... more
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