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Probability Distribution
Page 4
Questions (542)
SAT scores are normally distributed. The SAT in English has a mean score of 500 and a standard deviation of 100.
a. Find the
4 answers
asked by
Joanne
4,178 views
The amount of Jen’s monthly phone bill is normally distributed with a mean of $50 and a standard deviation of $10. Find the
4 answers
asked by
Jane
1,890 views
The lifetime (in thousands of hours) X of a light bulb has pdf
g(x)= \lambda e^{-\lambda x}, \hspace{3mm} x\geq 0 for some
2 answers
asked anonymously
126 views
The binomial distribution, with distribution function
[mathjax]f_ p(x) = \binom {n}{x}p^ x (1-p)^{n-x}[/mathjax] can be written
2 answers
asked anonymously
41 views
Suppose you cast and keep casting a die until you get either number 5 or 6? What is the probability that you will stop after
2 answers
asked by
xiny
66 views
The historical 1-month credit loss distribution of a portfolio of loans in million euros is well approximated by a Normal
1 answer
asked by
shalini
112 views
The random variables X and Y are independent and have the PMFs shown in this diagram;
PX(x) 1, 1/6 2, 3/6 3, 2/6 PY(y) 2, 2/6 3,
2 answers
asked by
ProbablyDumd
90 views
Let X,Y,Z be independent discrete random variables with
E[X]=2, E[Y]=0, E[Z]=0, E[X^2]=20 E[Y^2]= E[Z^2]=16, and
1 answer
asked by
Mosab
127 views
A taxi driver has observed that, on any given day, the probability that a customer wears a hat is 41%.
a) What is the probability
1 answer
asked by
K
110 views
How would I complete the following distribution table?
Probability Distribution Table X P(X) −27 0.1 −6 ? 29 0.2 60 0.5
1 answer
asked by
NeedMAthHelp
399 views
2.Let X_1…X_n be i.i.d random variables with pdf f_θ(x)= θx^(θ-1)1(0<x<1) where θ is some positive number
a) is the
1 answer
asked by
joseprofe
458 views
2
Let X1,…,Xn be i.i.d. random variable with pdf fθ defined as follows: fθ(x)=θxθ−11(0≤x≤1) where θ is some positive
1 answer
asked by
juanpro
972 views
For each working day, in a local bank, there will be n people applying for personal loan. The probability that the
person’s
1 answer
asked by
ines
252 views
Mimi has a bag of sweets containing 7 chocolates and 5 toffees. Robin has a bag of sweets containing 3 chocolates,
4 toffees and
1 answer
asked by
ines
401 views
A soft drink bottler purchases glass bottles from a vendor. The bottles are required to have an internal pressure of at least
2 answers
asked by
Anonymous
531 views
Let X be uniform on [0,1/2] . Find the PDF fY(y) of Y=X/(1−X) .
For 0≤y≤1 :
1 answer
asked by
abhi
445 views
According to a survey, 35% of adults are against using animals for research. Assume that this result holds true for the current
1 answer
asked by
Kishon Tennassee 34986
488 views
Let X be normally distributed with mean μ = 26 and standard deviation σ = 13. [You may find it useful to reference the z
3 answers
asked anonymously
69 views
Let X be normally distributed with mean μ = 102 and standard deviation σ = 34. [You may find it useful to reference the z
3 answers
asked anonymously
76 views
A marketing research shows that for every 100 flyers distributed to potential customers, 1.2 customers will be captured. If
1 answer
asked by
anime_mastergirl
383 views
A worker at a landscape design center uses a machine to fill bags with potting soil. Assume that the quantity put in each bag
3 answers
asked anonymously
65 views
A box contains 4 red and 5 blue marbles. Michele picks three marbles at random from this box. If Z is a random variable
3 answers
asked by
Joanna
1,142 views
USA snapshot presented a bar graph depicting business travelers’ impression of wait times in airport security lines over the
1 answer
asked by
Valarie
428 views
n a written test given to a large class comprising 42 students, the test scores were found to be normally distributed with a
4 answers
asked by
faye
711 views
Industry standards suggest that 18% of new vehicles require warranty service within the first year. Jones Nissan, sold 11
3 answers
asked by
Nick
694 views
The closing price of Schnur Sporting Goods Inc. common stock is uniformly distributed between $23 and $37 per share.
What is the
2 answers
asked by
Rachel
906 views
A box contains two red balls, four green balls, and two white balls. You extract balls from the box with replacement 100 times.
2 answers
asked by
Timmy
558 views
The graph shows a probability distribution.
Which probabilities are equal to 0.3? Select each correct answer. P(X≥3) <my choice
3 answers
asked by
ashleigh
2,194 views
For a particular group of people, the number of hours of sleep per night is normally distributed with a mean of 7.7 and a
2 answers
asked by
Candice
644 views
The amount of time a student spends completing homework per week their senior year is normally distributed with a mean of 5
1 answer
asked by
Kate
805 views
buses arrive at a bus stop at 15minute interval,starting from
7am if a passenger arrived at a times that is his uniformly
2 answers
asked by
dam
568 views
Suppose that a certain type of metalic tube contains on the average five defects per
900 feet. Let X be the number of defects per
2 answers
asked by
hassan
541 views
A radioactive source of material emits a radioactive particle with probability 1/100
in each second. Let X be the number of
2 answers
asked by
hassan
511 views
The average monthly attendance to the senior citizen bowling league is 67 with a stdev of 6.5. What is the probability that a
1 answer
asked by
Max
374 views
A fireworks show is designed so that the time between fireworks is between one and five seconds, and follows a uniform
distributi
1 answer
asked by
Nandini
724 views
Make a histogram showing the binomial probability distribution for the following: A waiter at the Green Spot resturant has
2 answers
asked by
unclesam
654 views
Assume it is known that the probability of birth is equal in all months. What is the probability that in the STAT 1025 class of
1 answer
asked by
abcd
481 views
Need help please on these questions:
1. A poll at Steve's high school was taken to see if students are in favor of spending class
1 answer
asked by
Josh
627 views
so the question is:
the weights of fish in a certain lake are normally distributed with a mean of 10, a standard deviation of 6.
3 answers
asked by
paul
745 views
Does P(x) = x/5, where x can take values of 0, 1, 2, 3, describe a probability distribution?
Would the answer be no because when
1 answer
asked by
maria
392 views
Can someone help me work this out.
Find the a) mean, b)variance and c) standard deviation for the probability distribution below
2 answers
asked by
Debra
572 views
1)Suppose that the weight of tomato juice in mechanically filled cans follows a normal distribution with a mean of 464 grams and
2 answers
asked by
Liz
561 views
Daily water intake (including water used in drinks such as coffee, tea and juice) for Canadian adults follows a normal
3 answers
asked by
Hui
542 views
The probability that an observation, following a normal distribution, will lie within μ
± 1.3σ is a. 9.5 % b. 19.0% c. 40.3%
2 answers
asked by
meryy
542 views
Let X be a random variable that takes non-zero values in [1,∞), with a PDF of the form
fX(x)=⎧⎩⎨cx3,0,if x≥1,otherwise.
1 answer
asked by
qwerty
647 views
In the problems on this page, we will work through the definitions and minimization described above for a simple data
3 answers
asked anonymously
38 views
Consider the general case where the two classes have different means and possibly different variances:
\displaystyle
3 answers
asked anonymously
45 views
Exponential distribution was used to model the lengths of CD-ROM drives in a two drive system. The two CD-ROM drives operate
1 answer
asked by
ehsan
472 views
Assume that the mean hourly cost to operate a commercial airplane follows the normal distribution with a mean of $2,175 per hour
2 answers
asked by
Meredith
571 views
Commuters were asked how many times a week they stop for coffee on their way to work. A survey found a mean of 3 times a week
3 answers
asked by
brewster
526 views
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Parent Categories (37)
Coin flipping
Combinatorics
Conditional probability
Daily Water Intake
Data Analysis
Data distribution
Descriptive Statistics
Discrete Probability
Energy
Exam scores
Expected Value
Grading
Hypothesis Testing
Independent Events
Mathematics
Mathematics/Statistics
Normal Distribution
Probability
Probability and Sampling
Probability and Statistics
Probability Calculation
Probability Theory
Random Variables
Rate of Arrival
Sample Mean
Sampling
Sampling and Estimation
Sampling and Hypothesis Testing
Sampling and Sampling Distributions
Sleep Statistics
Spinner outcomes
Statistical Analysis
Statistics
Statistics and Analysis
Statistics and Data Analysis
Statistics and Probability
Statistics or Probability