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Probability and Statistics
Page 7
Questions (4,622)
A game involves making a 3 by 3 grid with nine cards from a standard deck. You win if three cards in a row (horizontally,
3 answers
asked by
Haley
822 views
Sophia is vacationing in Monte Carlo. On any given night, she takes X dollars to the casino and returns with Y dollars. The
7 answers
asked by
Kina
5,893 views
A certain virus infects one in every 200 people. A test used to detect the virus in a person is positive 90% of the time if the
4 answers
asked by
Anonymous
3,180 views
A 5-digit PIN code cannot begin with zero and the remaining digits have no restrictions. If repetition of digits is allowed,
4 answers
asked by
Anonymous
2,765 views
Let X be a random variable with PDF fX. Find the PDF of the random variable Y=eX for each of the following cases:
For general fX,
4 answers
asked by
janki
2,880 views
Problem 2. Continuous Random Variables
2 points possible (graded, results hidden) Let 𝑋 and 𝑌 be independent continuous
3 answers
asked by
peter
2,571 views
Suppose that X is a continuous random variable and that Y=X^4. Then, for y≥0 we have
fY(y)=ay^bfX(−cy^d)+ay^bfX(cy^d), for
4 answers
asked by
Anon
546 views
In this problem, you may find it useful to recall the following fact about Poisson random variables. Let X and Y be two
3 answers
asked by
Anonymous
1,067 views
Gani, a regular coffee drinker, goes to his favorite coffee shop every night for a cup of hot cappuccino. The amount of time
5 answers
asked by
Angel
915 views
In a number guessing game. You ask a person to guess a number from one 1 to 10. If the person makes a random guess, what is the
5 answers
asked by
Anonymous
5,617 views
FUNCTIONS OF A STANDARD NORMAL
The random variable X has a standard normal distribution. Find the PDF of the random variable Y,
4 answers
asked by
RVE
3,532 views
A fair coin is flipped independently until the first Heads is observed. Let K be the number of Tails observed before the first
4 answers
asked by
JuanPro
3,696 views
Let U, V, and W be independent standard normal random variables (that is, independent normal random variables, each with mean 0
6 answers
asked by
A
2,115 views
The random variables X and Y have the joint PMF
pX,Y(x,y)={c⋅(x+y)2,0,if x∈{1,2,4} and y∈{1,3},otherwise. All answers in
4 answers
asked by
clyde
6,743 views
A random sample of 15 people is taken from a population in which 40% favour a particular political stand. What is the
6 answers
asked by
Cb
4,490 views
Cars arrive at a toll booth according to a Poisson process with mean 80 cars per hour.
How long can the attendant's phone call
7 answers
asked by
Sean
5,168 views
Bret and Shawn are playing a game where each turn the players roll a 20-sided die fair and then add the number they get to their
6 answers
asked by
glo
1,223 views
The law of iterated expectations tells us that E[E[X/Y]] = E[X]. Suppose that we want apply this law in a conditional universe,
5 answers
asked by
silly_muffin
170 views
The chances of three independent events P, Q, R occuring are 1/2, 2/3, 1/4 respectively. What are the chances of two of them
2 answers
asked by
Susan
128 views
Aubree has a bag that contains orange chews, apple chews, and watermelon chews. She performs an experiment. Aubree randomly
2 answers
asked by
Gabrielle Abel
107 views
A bag contains 6 blue marbles, 7 green marbles, and 9 yellow marbles. Twice you draw a marble and replace it. Find P(yellow,
5 answers
asked by
Abigail waller
3,243 views
I need help. I am so so lost and need the answers and step by step if possible. I have tried everything but I think I'm just..
2 answers
asked by
mel
589 views
Suppose x is random variable with normal distribution (u,sigma^2) distribution and p(x<=0)=1/3 and p(x<=1)=2/3 what are the
7 answers
asked by
Star
848 views
1. Jamal writes the letters K-A-N-S-A-S on cards and then places the cards in a hat. What is the probability of picking an N? (1
7 answers
asked by
help pleas
3,544 views
"Records show that 8% of all college students are foreign students who also smoke. It is also known that 50% of all foreign
4 answers
asked by
kate
2,918 views
If a student randomly guesses at 15 multiple-choice questions, find the probability that the student gets exactly seven correct.
4 answers
asked by
danasiy
4,739 views
I need help. I got all of these questions out of 50 wrong. 6-10 were not given.
1. Which of the following is an example of
30 answers
asked by
Anonymous
6,018 views
Alice and Bob each choose at random a real number between zero and one. We assume that the pair of numbers is chosen according
9 answers
asked by
JuanPro
9,170 views
An airport limousine has four passengers and stops at six different hotels. What is the probability that two or more people will
4 answers
asked by
Anonymous
4,022 views
Ryan spent a dollar on a Tri-State Megabucks ticket, enticed by a big jackpot. Ryan chose six different numbers from 1 to 40,
4 answers
asked by
jane
836 views
A coin is tossed and a dice is rolled.
10.1 Represent the above scenario in a tree diagram. (2) 10.2 How many different possible
2 answers
asked anonymously
111 views
How do you use normal density function fomulae show with 2 examples?
2 answers
asked anonymously
105 views
Suppose X_1 is an observation for Bob, X_5 is an observation for Alice, X_7 is an observation for Charlie.
Using the following
2 answers
asked anonymously
158 views
A game involves spinning this spinner. What is the probability of the pointer landing on G?
spinner: R R R R B B G Y answer
7 answers
asked by
☆*: .。. o(≧▽≦)o .。.:*☆❤️❤️✨
142 views
There is a spinner with 15 equal areas, numbered 1 through 15. If the spinner is spun one time, what is the probability that the
1 answer
asked by
Adoette
129 views
A bag contains 6 red marbles, 4 blue marbles and 7 green marbles. If three marbles are drawn out of the bag, what is the exact
1 answer
asked anonymously
89 views
A spinner has three equal sections: blue, green, and purple. Josiah spins the spinner and tosses a coin. Which shows the sample
1 answer
asked by
James Glass
156 views
PROBLEM 4: PARKING LOT PROBLEM (3 points possible)
Mary and Tom park their cars in an empty parking lot with n≥2 consecutive
3 answers
asked by
JuanPro
2,610 views
Suppose 20% of babies born are born early, 50% are born on time, and 30% are born late. A nurse uses a random-number table to
3 answers
asked by
AnonymousUser1234
85 views
Identifying Sample Spaces
When you press Enter on the keyboard, a computer program outputs a random odd number greater than 1 and
1 answer
asked by
8 of 118 of 11 Items 05:09 Question Proba
218 views
Given that the probability of a chance event is a number between 0 and 1 that expresses the likelihood of the event occurring,
3 answers
asked by
goog
176 views
A money envelope contains five $10 bills, ten $20 bills, and fifteen $50 bills. Sandra randomly selects two bills without
1 answer
asked by
Cheezet
187 views
Which events are NOT independent?
Landing on heads after tossing a coin and rolling a 3 on a 6- sided number cube Choosing a
23 answers
asked by
Priscilla
3,432 views
The probability is 0.35 that a traffic fatality involves an intoxicated or alcohol-impaired driver or nonoccupant. In ten
3 answers
asked by
k
1,398 views
An individual has a transition intensity of mortality for the next 10 years of μs=0.01s per annum (where s is the number of
3 answers
asked by
pratham
711 views
Suppose you work for the quality control department at Hewlett Packard. You know that ink jet cartridges are sometimes
4 answers
asked by
Jaz
491 views
This figure below describes the joint PDF of the random variables X and Y. These random variables take values over the unit
7 answers
asked by
anonymous
1,082 views
the life span of a calculator manufactured by the intel corporation has a normal distribution with a mean of 54 months and a
2 answers
asked by
Shriya Sharma
782 views
A class consists of 50 women and 82 men. If a student is randomly
selected, what is the probability that the student is a woman?
3 answers
asked by
angela
803 views
Adefective coin minting machineproducescoinswhoseprobability ofheadsisarandomvariable P with PDF
1+sin(2πp), if p ∈ [0,1],fP
1 answer
asked by
Anonymous
941 views
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