803 Answered Questions for the topic Probability & Statistics
Probability & Statistics Statistics
01/10/16
Which is the best explanation?
Data on the diameter (in inches) and the age (in years) of a sample of 25 oak trees yielded the regression equation diameter = 1.18 + 0.165 · age and the residual plot shown here.Which of these is...
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Probability & Statistics Quantitative Methods
12/28/15
Please translate the following into standard normal probability distribution
(transform x to z) with Mean μ = 30 and standard deviation σ = 4. Find P(x < 40) ; P(x > 21) ; P(30 < x < 35)
Probability & Statistics
12/18/15
Could I get some help with this please!!!!!
A certain brand of candies have a mean weight of 0.8605 g and a standard deviation of 0.0513. A sample of these candies came from a package containing 441 candies, and the package label stated that...
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12/17/15
If, on the first observation the system is in state 1, what is the probability that it is in state 1 on the third observation?
A Markov chain has the transition matrix shown below:P=[0.2 0.4]
[0.8 0.6]
1. If, on the first observation the system is in state 1, what is the probability that it is in state 1 on the...
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12/17/15
For each of the following vectors, find a value for x for which the vector is a probability vector.
(1)[0.1, 0.2, 0.2, x, 0.3] x=
(2)[x, 0.4, 0, x, 0.4] x=
(3)[x, 0, 2x, 0.2, x] x=
(4)[2x, 2x, 4x, 3x, 3x] x=
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12/17/15
Find a transition Matrix
If the student attends class on a certain Friday, then he is five times as likely to be absent the next Friday as to attend. If the student is absent on a certain Friday, then he is twice as likely...
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Probability & Statistics
12/16/15
Don't have any idea on how too do this!!!!!!!!!!!!
Could I please get some Help!!!!!!Assume that a procedure yields a binomial distribution with n trials and the probability of success for one trial is p. Use the given values of n and p to find the...
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12/15/15
If the animal is initially in the woods, what is the probability that it is in the meadow on the next three observations?
If the animal is in the woods on one observation, then it is three times as likely to be in the woods as the meadows on the next observation. If the animal is in the meadows on one observation,...
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Probability & Statistics Statistics
12/10/15
Find the indicated Probability
Of the 73 people who answered "yes" to a question, 14 were male. Of the 53 people that answered "no" to the question, 9 were male. If one person is selected at random from the group. what is the...
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12/09/15
Two aces problem !
A bridge hand has been dealt. Are the following two conditional probabilities equal? If a given hand has an ace, what is the probability that the given hand has a second ace? Given that the hand...
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Probability & Statistics Discrete Mathematics
12/09/15
Probability of winning a laptop?
There is going to be a raffle in the College of Engineering and Computer Science. They are going to give away one prize. It willbe either a coffee mug, and old mouse, or a brand new Alienware...
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Probability & Statistics
12/04/15
Probability question?
Assume that 2% of the Brazilian population have dengue fever in 2008 and that a test correctly identifies the fever 95% of the time. Assume that a false positive occurs 5% of the time. If a person...
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Probability & Statistics
12/04/15
A container contains 1 blue ball, 2 red, and 3 orange balls. Tabulate a sample space for the following experients.
A container contains 1 blue ball, 2 red, and 3 orange balls. Tabulate a sample space for the following experiments.
a. A single ball is drawn
b. When a red ball is drawn
c. A ball is...
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Probability & Statistics
12/02/15
probability?
PLEASE help
the probability that a person owns a cat is 89% and the probability of a person owning a sheep is 8%. the probability of someone owning both is 6%. what is the probability of someone...
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Probability & Statistics
12/01/15
How many possible ways are there to form the executive board?
The board of directors of a corporation comprises twelve members. An executive board, formed by five directors, needs to be elected. How many possible ways are there to form the executive board?
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Probability & Statistics
12/01/15
What is the probability that a total of two dice thrown will be higher than a 4 given that the first dice is a 1?
Remember to denote event A and event B, think about whether these will be dependent or independent? Use the corresponding formula in order to get to the answer.
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Probability & Statistics
12/01/15
Equipment A produces 12% and B produces 88% of spare parts.
From the past, the company knows that the probability of equipment A to produce a defective spare part is 0.03 and the probability for equipment B to produce a defective spare part is 0.07. If a...
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11/30/15
Probability and Markov Processes? Free Throws. Please Help.
If she made the last free throw, then her probability of making the next one is 0.9. On the other hand, If she missed the last free throw, then her probability of making the next one is 0.2. Assume...
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11/29/15
The answer is 4/143 but I cannot figure out how to set my problem up to get to that answer. We are using nCr on the calculator to figure out our equation
A doctor has five doses of flu protection vaccine left. he has six women and eight men who want the medication. if the names of five of these people are selected at random determine the probability...
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Probability & Statistics
11/28/15
Statistics
In a survey of adults 68% thought DNA tests for identifying an individual were very reliable. If you randomly select 44 adults and ask ear if he thinks the DNA tests for identifying an individual...
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Probability & Statistics
11/25/15
Properly calculate an x times increase in probablity
Sample problem: Out of 100 events an outcome probablity is 0%. If the probability of this outcome increases by 21 times, what is the new probability %? Please share the calculation. Help is much...
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Probability & Statistics
11/23/15
SB 7.35 fair method
35. Every year, the NBA holds a draft lottery. Teams who miss the playoffs in any given year are put into the lottery the next year. The team with the worst record gets 250 table tennis balls in...
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Probability & Statistics
11/23/15
SB 7.31 probability
31. Find the probability of rolling a three first and then a four when a die is rolled twice.
a) 1/18
b) 1/6
c) 1/12
d) 1/36
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