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Probability distributions
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Questions (279)
Is the following distribution a probability distribution
(x, P(X)) = (-2,1.23); (-1, 0.15) ; (0, -1.20); (1, 0.52); (2, 0.30)
3 answers
asked by
Neriella
644 views
The playing time X of classical CDs has the normal distribution with mean 54 and standard deviation 5; the N(54, 5)
3 answers
asked by
Jasel
2,423 views
scores on a University exam are normally distributed with a mean of 68 and a standard deviation of 9. use the 68-95-99.7 rule to
3 answers
asked by
kayla
1,571 views
Determine whether a probability distribution is given. If a probability distribution is given, find its mean and standard
4 answers
asked by
Lexi
3,174 views
The following is a histogram (right skewed) of the first ten terms of a geometric distribution with p = .4. The mean of this
3 answers
asked by
Jim
2,069 views
assume that blood pressure readings are normally distributed with a mean of 111 and standard deviation of 7. A researcher wishes
2 answers
asked by
jessica
1,121 views
Assume that human body temperature are
normally distributed with a mean 98.21 F and a standard deviation of 0.61F a)A hospital
4 answers
asked by
angela
1,536 views
A recent survey found that 70% of all adults over 50 wear glasses for driving. You randomly select 30 adults over 50, and ask if
3 answers
asked by
Clifford
3,930 views
A probability distribution has a mean of 57 and a standard deviation of 1.4. Use Chebychev’s inequality to find the value of c
3 answers
asked by
Bobbie
1,224 views
Assume a binomial probability distribution has p = .60 and n = 200.
a)What are the mean and standard deviation (to 2 decimals)?
2 answers
asked by
Vanessa
1,327 views
help i do not understand how to solve this question: assume that blood pressure readings are normally distributed with a mean of
3 answers
asked by
jessica
769 views
X is a random variable following binomial distribution with mean 2.4 and variance 1.44 find
4 answers
asked by
probability
1,628 views
As the degrees of freedom for the t-distribution increase, the distribution approaches
the value of zero for the mean. the
3 answers
asked by
Anonymous
971 views
The number of traffic accidents per day on a certain section of highway is thought to be Poisson distributed with a mean equal
3 answers
asked by
Aria
1,901 views
A marine biologist has determined that the weight of a full weight of 2000pounds and a standard deviation of 500 pounds.
3 answers
asked by
Kim
561 views
a population forms a normal distribution with a mean of u=80 and a standard deviation of o=15. for each of the following
3 answers
asked by
darrell
1,505 views
Suppose that fifteen observations are chosen at random from the pdf f_Y(y) = 3y^2, 0<=y<=1. Let X denote the number that lie in
3 answers
asked by
Jen
791 views
I.use the chebyshev's theorem to find out what percentage of the values will fall between 201 and 257 for a data set with a mean
2 answers
asked by
mary
834 views
A Poisson random variable describes the number of successes of a certain event
Multiple choice question. when the probability of
2 answers
asked anonymously
55 views
The discrete uniform distribution is _____.
Multiple choice question. skewed right skewed left symmetric asymmetric
2 answers
asked anonymously
52 views
Recall from the slides that the Gamma distribution can be reparameterized using the two parameters a, the shape parameter, and
2 answers
asked anonymously
61 views
.8 probability that a randomly selected adult will watch prime time tv live, instead of online, on DVR, etc.. Assume that seven
4 answers
asked by
Edward
178 views
Consider a smaller dataset with only four discrete attributes (Shipping Line, US Port, Foreign Port, Weight), and the following
1 answer
asked by
ALpha
394 views
A random variable X is exponentially distributed with an expected value of 50.
a-1. What is the rate parameter λ? (Round your
3 answers
asked anonymously
61 views
A fair die is rolled 4 times
a) create a probability distribution for the number of times the die rolls a 3. Do I solve this
1 answer
asked by
lijm
400 views
Susan is a sales representative who has a history of making a successful sale from about 67% of her sales contacts. If she makes
1 answer
asked by
Tamia
631 views
Supposed that voting in municipal elections is being studied and four people are randomly selected. The accompanying table
2 answers
asked by
Chloe
499 views
Bob has two coins, A and B, in front of him. The probability of Heads at each toss is p=0.5 for coin A and q=0.9 for coin B.
Bob
1 answer
asked by
stud81
789 views
Consider the the distribution of under-inflated tires on a four-wheel automobile. The mass
density is given by: p(0) = 0.4, p(1)
1 answer
asked by
Ray
417 views
Concentration vs Distance plots resemble _____________ .
Lognormal distribution Binomial distribution Lorentzian distribution
1 answer
asked by
Nick
486 views
The Information Systems Audit and Control Association surveyed office workers to learn about the anticipated usage of office
1 answer
asked by
paige
726 views
The graph shows a probability distribution.
Which probabilities are equal to 0.3? Select each correct answer. P(X≥3) **my
3 answers
asked by
sel
1,395 views
Okay so for the question I'm posting has a pic with it but idk how I can attach it so you guys can see it because I know you'll
3 answers
asked by
Ms.Sue please help?
637 views
Which probability matches the probability histogram?
Assume that there are 2 trials. X = 2 where X represents the number of
4 answers
asked by
Arianna
2,078 views
Decide which of the described variables is/are likely to have a normal or near-normal distribution.
a) The heights of corn stalks
1 answer
asked by
angela
833 views
Tests on a Chevy Cobalt incdicate a population mean of 32 mpg and a population standard deviation of 3.5 mpg. You take an SRS
4 answers
asked by
S
494 views
Jake plays basketball. Assume y= the number of basketball goals that Jake makes during a given season, and assume y can only
2 answers
asked by
Victoria
508 views
A weighted coin is flipped 200 times. Assume that the probability of a head is 0.3 and the probability of a tail is 0.7. Each
2 answers
asked by
Hhh
536 views
In a certain city, the daily consumption of electrical energy, in millions of kilowatts per hour, can be considered as a random
3 answers
asked anonymously
54 views
The mean of a normal probability distribution is 60; the standard deviation is 5
4 answers
asked by
george
1,454 views
An installation technician for a specialized communication system is dispatched to a city only when three or
more orders have
2 answers
asked by
poisson
742 views
Let T1,T2,…,Tn be i.i.d. observations, each drawn from a common normal distribution with mean zero. With probability 1/2 this
2 answers
asked by
Fiore
585 views
The average number of houses sold by a company is 2 houses per day what is the probability that exactly 3 houses will be sold in
2 answers
asked by
Sue
484 views
The waiting times between a subway to Podger schedule and the arrival of the passenger on uniformly distributed between zero and
3 answers
asked by
Ella
1,181 views
If np is greater than or equal to 5, and nq is greater than or equal to 5, estimate P(fewer than 8) with n =14 and p = 0.6 by
1 answer
asked by
slomomo
1,174 views
Explain why this is or is not a probability distribution.
x 1 2 3 4 P(x) 0.4 0.3 0.4 -0.1 Please I do not understand!!
1 answer
asked by
slomo
344 views
In an examination a candidate is given the four answers to four questions but is not told which answer applies to which
2 answers
asked by
Heidi
594 views
All ships travel at the same speed through a wide canal. Each ship takes t days to traverse the length of the canal. Eastbound
2 answers
asked by
A
769 views
Assume your expected lifetime income is $1.5 million and the standard deviation is $250,000.
a) What is the chance that you will
1 answer
asked by
Brittany
477 views
A fair coin is tossed 3 times in a row. If X is the number of heads counted, what is the mean of the probability distribution of
1 answer
asked by
Shawna
416 views
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Parent Categories (16)
Apple picking probability
Continuous Random Variables
Data Analysis
Expected Value
Expected Value and Variance
Math/Statistics
Probability
Probability and Statistics
Probability Theory
Random Variables
Sampling and Probability
Statistical Analysis
Statistical Mechanics
Statistics
Statistics and Probability
Statistics or Probability