5,395 Answered Questions for the topic probability

Probability

07/01/21

Simplex Method Linear Equations

minimize c=2s+t+3u Subject to s+u≥1002s+t≥50s≥0, t≥0, u≥0
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Probability

06/30/21

Four couples are to be seated in a straight line in such a way that the couples sit together. In how many ways can this be done?
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Probability

06/29/21

Probability Question......
I have this probability question that is driving me bonkers.....The probability that a high school senior owns a laptop is 0.6. The probability that a high school senior owns a car is 0.2. The... more
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Probability

06/28/21

License Plate - Probability Conditional
Hello,What is the probability of getting a license plate that has a repeated letter or digit if you live in a state in which license plates have two letters followed by four numerals? (Round your... more
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Probability

06/24/21

Medical Probability question
Your friend suggests the following as a way of doing medical testing: Just tell each person "tested" that he or she has the disease—the test result is always positive. What is the sensitivity and... more
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Probability

06/24/21

HOW MUCH DO TIRES COST
A company manufactures tires at a cost of $40 each. The following are probabilities of defective tires in a given production run: probability of no defective tires: 10%; probability of 1% defective... more
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Probability Statistics

06/24/21

How do I calculate this problem and is there a way to do it on a TI-84plus?
if there is a 35% chance of rain every day for the next four days, what is the probability that it will rain every day for the four days?
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Probability

06/24/21

i need help on expected values...
Each question on a multiple-choice exam has five choices. One of the choices is the correct answer, worth 4 points, another choice is wrong but still carries partial credit of 1 point, and the... more
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Probability

06/23/21

can someone please help me
A company produces products at a cost of $38 each. Defective products cost an additional $15 each to repair. The probability of no defective products is 80%. The probability of 5% defective... more
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Probability

06/23/21

Permutation and combination
Five persons are chosen at random from a group of ten persons consisting of four men and six women. Calculate the probabilities that the four persons chosen will:1. Consist of five women.2. Consist... more
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06/22/21

What is the mathematical expectation for this game?
Suppose you toss a coin and will win $5 if it comes up heads. If it comes up tails, you toss again. This time you will receive $10 if it comes up heads. If it comes up tails, toss again. This time... more
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06/22/21

What is the expected height (in inches)?
Heights (in inches) obtained by a group of people in a random survey are reported in the following... more
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Probability Statistics

06/21/21

Find the critical values.
An MP claims that the average number of acres in his province’s State Parks is less than 2000 acres.A random sample of five parks is selected and the number of acres is shown below:959, 1187, 493,... more
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Probability Statistics

06/21/21

Find the probability.
It is reported that children between 2 and 6 years old watch an average of 20 hours of TV per week. Assume the variable is normally distributed and the standard deviation is 3 hours. If 20 children... more
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Probability Statistics

06/21/21

What percentage?
The lengths of 5-inch nails manufactured on a machine are normally distributed with a mean of 5.0 inches and a standard deviation of 0.009 inch. The nails that are either shorter than 4.98 inches... more
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Probability Statistics

06/21/21

Find the probability.
Two balls are drawn in succession without replacement from an urn containing 4 red balls and 3 black balls. Find the probability distribution of the number of black balls.
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Probability Statistics

06/21/21

How many committees?
A group of 9 people is going to be formed into committees of 4, 3, and 2 people. How many can be formed if no person can serve on more than one committee?
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Probability Statistics

06/21/21

Find the probability.
In a university, the probability that a student takes calculus or is on scholarship is 0.85. The probability that a student is on scholarship is 0.61 and the probability that a student is taking... more
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Probability Statistics

06/21/21

Find the sample space and probability
A couple has three children.i) Find the sample space for this experiment.ii) Find the probability of getting at least one child of each gender.
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Probability

06/19/21

Probability of 2 different people choosing some of the same marbles from a jar
There are 20,412 unique marbles in a jar. One person picks 11 marbles, and puts them back and the jar is thoroughly mixed. Another person then picks 5 marbles. What is the chance that 2 of the 5... more
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Probability

06/18/21

Probability_Math
​58% of U.S. adults have very little confidence in newspapers. You randomly select 10 U.S. adults. Find the probability that the number of U.S. adults who have very little confidence in newspapers... more
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Probability

06/17/21

need help with this Math question!

In the 2016 referendum on the independence of wales from the UK, approx.44% of welsh population was pro-independence. Suppose we now interview arandom sample of 100 people. What is the probability... more
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Probability

06/16/21

Green, Red and Blue Ball (Probability)
In a bag there are green, blue and red balls. Take one ball off the bag. The probability of taking a green ball is 1/3, and the probability of taking off a blue ball is 1/2. There are 6 red balls.... more
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Probability Math Statistics Act Math

06/15/21

Find the probability that
From a box there are 6 white balls and 4 red balls, then 4 balls are selected, without replacement, at random and transferred to a second box, which is empty.balls are selected at random and... more
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Probability Statistics Act Math

06/15/21

Determine the probability that this student is a) very well prepared, b) poorly prepared.
In a group of 10 students taking the exam, there are 3 who have prepared very well, 4 well, 2 moderately well and one poorly.well, 4 well, 2 moderately and 1 poorly prepared. There are a total of... more
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