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Probability and Statistics
Page 3
Questions (4,628)
if you roll a die 54 times how many times would you expect it to land on 6
5 answers
asked by
anna vullo
997 views
A box contains some white balls and some blue balls. There are 5 more blue balls than white balls. One ball is removed at random
9 answers
asked by
Courtney
3,015 views
How do you solve:
n is 2 given that it is even The directions say "let n be a randomly selected integer from 1-20. Find the
4 answers
asked by
PLEASE HELP ME OUT!!
1,995 views
A drawer contains 64 balls. Each ball is one of 8 colors, and there are 8 balls of each color. If the balls in the drawer are
4 answers
asked by
Mickle
1,314 views
Michael is playing tournament chess against a computer program and the probability he wins against the program at any given game
4 answers
asked by
zxz
1,134 views
Let X and Y be independent random variables, each uniformly distributed on the interval [0,1].
Let Z=max{X,Y}. Find the PDF of Z.
3 answers
asked by
alec
890 views
a) Predict the number of 6s you will get if you roll a number cube 30 times.
b) Predict the number of even numbers you will get
4 answers
asked by
Olivia
658 views
You are interested in the number of chocolate chips on a cookie. To estimate this number, you consider two different
3 answers
asked by
Joseph
1,052 views
A store manager believes that 42% of her customers are repeat business (have visited her store within the last two weeks).
4 answers
asked by
Babyboo
1,673 views
Compound Events – Portfolio
Use the worksheet to record your answers to the Compound Events portfolio activities. When you are
1 answer
asked anonymously
110 views
A defective coin minting machine produces coins whose probability of Heads is a random variable Q with PDF
fQ(q)={3q2,0,if
5 answers
asked by
A
8,494 views
A math class contains 7 females (three of whom speak French and the rest speak only English),and 12 males (two of whom speak
5 answers
asked by
jennifer
5,320 views
A bag contains 2 white marbles and 7 purple marbles. Two marbles are drawn at random. One marble is drawn and not replaced. Then
25 answers
asked by
Anonymous
10,688 views
1. You mix the letters: S E M I T R O P I C A and L thoroughly. Without looking you draw one letter. Find the probability that
109 answers
asked by
Rebekah
25,395 views
Let X and Y be independent random variables, uniformly distributed on [0,1] . Let U=min{X,Y} and V=max{X,Y} .
Let a=E[UV] and
4 answers
asked by
anon
3,412 views
A fair tetrahedral dice (with face number 1,2,3,4)and a fair coin are tossed together.
A) construct a table for the sample space
4 answers
asked by
Winnie faith
309 views
An experiment involves picking a card from a selection of cards numbered 5, 10, and 15. In equation form, what is the
3 answers
asked by
jerem
326 views
Consider a Poisson process with rate λ. Let N be the number of arrivals in (0,t] and M be the number of arrivals in (0,t+s],
4 answers
asked by
JuanPro
2,187 views
The table shows the results of rolling a number cube labeled one through six 50 times.
Number Rolled Frequency 1 7 2 9 3 11 4 6 5
84 answers
asked by
Friendly
19,981 views
In a family with 4 children what is the probability of having 1 boy and then 3 girls, in that order? (Exclude multiple births
5 answers
asked by
john
20,818 views
Two coins were tossed 10 times. The results are shown below.
toss: 1 | 2| 3 | 4 | 5 | 6 | 7 | 8 | 9 | |10 results: hh | tt | ht |
15 answers
asked by
davonte s
3,250 views
Your drawer contains 7 red socks and 6 blue socks. It's too dark to see the color of the socks, so you randomly pull two socks
4 answers
asked by
Anonymous
1,535 views
A bowl contains 3 red balls, 2 blue balls and 5 white balls. A ball is selected and the color noted. Then it is replaced. A
7 answers
asked by
Maryan
8,446 views
if you know the names of the starting batters for a baseball team, what is the probability of randomly selecting a batting order
5 answers
asked by
recie yanders
2,362 views
Selecting a letter of the alphabet: If 3 letters of the alphabet are selected at random, find the probability of getting at
4 answers
asked by
Anonymous
5,971 views
If the odds are 3 to 5 in favor of man receiving $200 if a certain act is performed, find his mathematical expectation.
4 answers
asked by
Gerome
1,529 views
The average age of chemical engineers is 37 years with a standard deviation of 4 years. If an engineering firm employs 25
4 answers
asked by
Anonymous
2,422 views
if a set of six books is placed randomly on a shelf, what is the probability that they will be arranged in either correct or
4 answers
asked by
Katie
1,218 views
Carey has a bag of marbles, there are 4 red marbles, 5 blue marbles, and 1 green marble. She conducted an experiment in which
4 answers
asked by
INEEDTHIS
1,296 views
Bowls a and b contain a number of white and red balls. Clark repeatedly selected 100 balls from bothe bowls and recorded the
1 answer
asked anonymously
56 views
The lifetime of a type-A bulb is exponentially distributed with parameter λ. The lifetime of a type-B bulb is exponentially
10 answers
asked by
A
11,487 views
We have k coins. The probability of Heads is the same for each coin and is the realized value q of a random variable Q that is
9 answers
asked by
A
8,038 views
Determine whether each of the following statement is true (i.e., always true) or false (i.e., not always true).
1. Let X be a
3 answers
asked by
RVE
3,780 views
1. The table shows the results of spinning a four-colored spinner 50 times. Find the experimental probability and express it as
93 answers
asked by
DragonBornFU5R0D48
22,016 views
Of 120 students, 60 are studying French, 50 are studying Latin and 20 are studying French and Latin. Find the probability that a
7 answers
asked by
Carline
7,770 views
1. Which of the following is an example of a dependent event?
flipping two coins rolling a number cube and spinning a spinner
7 answers
asked by
Jman
2,928 views
Richard is playing a game where he draws one playing card each out of two stacks of four cards.
Is Richard more likely to draw
5 answers
asked by
Laura
2,110 views
Problem 2. Continuous Random Variables
2 points possible (graded, results hidden) Let 𝑋 and 𝑌 be independent continuous
3 answers
asked by
peter
2,580 views
In a survey, 3 of 4 students said the courts show "too much concern" for criminals. Find the probability that at most 3 out of 7
5 answers
asked by
miyah
9,861 views
Three men and three women are waiting to be interviewed for jobs. If they are all selected in random order find the probability
5 answers
asked by
Katy
5,919 views
Suppose a bag contains 30 white marbles, 10 purple marbles, and 8 green marbles.
Question 1 One marble is randomly selected from
4 answers
asked by
One marble is randomly selected from the bag. In t
192 views
1.
Which of the following is an example of a dependent event? (1 point) flipping two coins rolling a number cube and spinning a
22 answers
asked by
Skittles
8,950 views
For all problems on this page, suppose you have data
X_1,\ldots ,X_ n \overset {\text {i.i.d.}}{\sim } \mathcal{N}(0,1) that is a
7 answers
asked anonymously
198 views
A spinner is divided into 4 sections labeled as K I N D Xavier reproduced the wheel and uses a computer to simulate the outcome
7 answers
asked by
Me
308 views
Let X and Y be independent continuous random variables that are uniformly distributed on (0,1). Let H=(X+2)Y. Find the
5 answers
asked by
Diane Lin
2,525 views
Which of the following can be reasonably modeled by a normal distribution?
The favorite colors of students in a kindergarten
10 answers
asked by
Anonymous
30,579 views
Airline overbooking
For any given flight, an airline tries to sell as many tickets as possible. Suppose that on average, 20% of
3 answers
asked by
SK
1,307 views
A high school class conducts a survey where students are asked about their eye color and whether or not they wear glasses. The
4 answers
asked by
Anonymous ;)
239 views
In a library box, there are 8 novels, 8 biographies and 8 war history books. If Jack selects two books at random, what is the
5 answers
asked by
Cons
976 views
1. What is the experimental probability of rolling a 3?
A. 0.11**** B. 0.22 C. 0.30 D. 0.27 2. A quality control expert randomly
7 answers
asked by
Diane
2,839 views
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