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Conditional probability
Page 3
Questions (1,746)
Let K be a discrete random variable with PMF
pK(k)=⎧⎩⎨⎪⎪1/3,2/3,0if k=1,if k=2,otherwise. Conditional on K=1 or 2,
3 answers
asked by
RVE
4,849 views
A bag contains three green Christmas ornaments and four gold ornaments. If you randomly pick two
ornaments from the bag, at the
4 answers
asked by
Hannah
1,362 views
A graduate class consists of six students. What is the probability that exactly three of them are born either March, June or
4 answers
asked by
Lori
1,740 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
2,914 views
Each person in a group of students was identified by year and asked when he or she preferred taking classes: in the morning,
3 answers
asked by
.
137 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
184 views
A foreman for an injection-molding firm admits that on 46% of his shifts, he forgets to shut off the injection machine on his
4 answers
asked by
EKM
2,261 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
1,395 views
A locker combination has three nonzero digits, with no repeated digits. If the first digit is a 2, what is the probability the
4 answers
asked by
Rebel #3 (Sophia)
1,229 views
Adefective coin minting machineproducescoinswhoseprobability ofheadsisarandomvariable P with PDF
1+sin(2πp), if p ∈ [0,1],fP
1 answer
asked by
Anonymous
938 views
In a class of students, the following data table summarizes how many students have a brother or a sister. What is the
2 answers
asked anonymously
149 views
A group consists of 120 students. Of these, 60 are studying French, 50 are studying Spanish and 20 are studying French and
2 answers
asked by
Anonymous
582 views
Question 13 (2 points)
A consumer magazine investigated the relationship between new car purchase price and total repair costs
6 answers
asked by
kenZZZ
148 views
A computer company hired interns from a group of 234 applicants. The table shows the numbers of applicants who were or were not
3 answers
asked by
Anonymous ;)
205 views
Each of two urns contains green balls and red balls. Urn 1 contains 8 green balls and 12 red balls. Urn 2 contains 5 green balls
7 answers
asked by
The Philly Inquirer
1,142 views
i think its C.
A bag of fruit contains 4 apples,1 plum,2 apricots,and 3 oranges.Pieces of fruit are drawn twice with replacement.
2 answers
asked by
matt
909 views
John & Jane are married. The probability that John watches a certain television show is .4. The probability that Jane watches
4 answers
asked by
CC
8,794 views
If 25% of U.S. federal prison inmates are not U.S. citizens, find the probability that two
randomly selected federal prison
1 answer
asked by
Randy
87 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
5 answers
asked anonymously
149 views
A class consists of 55% boys and 45% girls. It is observed that 25% of the class are boys and scored an A on the test, and 35%
3 answers
asked by
Emily
1,900 views
A test for a certain rare disease is assumed to be correct 95% of the time: if a person has the disease, the test result is
3 answers
asked by
Chibuzo Ekenna Ekejiuba
708 views
48% of the students in the school are female and the probability of taking of physics is independent of the gender of the
2 answers
asked by
Anonymous
565 views
80% of an airline's flights depart on-time and 20% do not. Of those that depart on-time, 95% arrive on-time. OF those that
5 answers
asked by
Anonymous
3,749 views
I am studying for an exam on Wednesday that covers probability. But I wanted to check in here for a refresher since it's been 2
3 answers
asked by
lijm
466 views
Could someone please check this and let me know if I'm doing it correctly?
Sammy and Sally each carry a bag containing banana,
2 answers
asked by
Mary
632 views
According to the record of the registrar's office at a state university, 40% of the students are freshman, 25% are sophomore,
3 answers
asked by
Morgan
827 views
The marketing director of a department store interviewed 50 customers who had bought appliances the previous week. They found
3 answers
asked by
Sharon
758 views
A statistics quiz consists of 10 multiple questions. There are four choices for each question.
One student is unprepared and
3 answers
asked by
Anonymous
609 views
Box A contains 3 white marbles and 4 black marbles. Box B contains 6 white marbles and 5 black marbles. An experiment consists
3 answers
asked by
Katie
3,012 views
A disease affects 9% of individuals in a population and a sample of 100 people is selected from the population. What is the
1 answer
asked by
Lindz
393 views
Alice has two coins. The probability of Heads for the first coin is 1/3, and the probability of Heads for the second is 2/3.
5 answers
asked by
A
4,032 views
5.70 The probability is 1 in 4,000,000 that a single auto trip in the United States will result in a fatality. Over a lifetime,
1 answer
asked by
Anonymous
519 views
A law firm has six senior and fourteen junior partners. A committee of 3 partners is selected at random to represent the firm at
4 answers
asked by
Emma
5,006 views
two cards are drawn in succession without replacement from a standard deck of 52 cards. what is the probability that the first
2 answers
asked by
Daren
807 views
While playing a game, Rachel pulls two tiles out of a bag without looking and without replacing the first tile. The bag has two
4 answers
asked by
Serena
688 views
Alice has five coins in a bag: two coins are normal (i.e., fair with one face Heads and the other face Tails), two are
7 answers
asked by
qwerty
1,305 views
The random variable K is geometric with a parameter which is itself a uniform random variable Q on [0,1]. Find the value
6 answers
asked by
maria
1,799 views
In one town, 70% of adults have health insurance. What is the probability that 6 adults selected at random from the town all
2 answers
asked anonymously
124 views
Given that S = {1, 2, 3, 4, 5, 6) and two events A = (1, 2, 3, 4) and B (2, 3) are observed on S, the P (A|B) is equal to:
2 answers
asked anonymously
71 views
In one town, 70% of adults have health insurance. What is the probability that 6 adults selected at random from the town all
2 answers
asked anonymously
92 views
A test has four questions: The first question is a true/false question, and it is followed by three multiple choice questions
2 answers
asked anonymously
121 views
Please show your work
5. Teesha is in the french club. There are 19 students in the club. The French teacher will pick two
7 answers
asked by
kiki
122 views
A couple has three children. Assuming independence and that the probability of a boy is 1/2, determine the probability that at
2 answers
asked anonymously
100 views
A Jar has 9 white marbles and 6 black marbles. What is the probability of selecting a black marble, replacing it in the jar, and
2 answers
asked by
oh
60 views
You have seven $1 bills, three $5 bills, five $10 bills, and five $20 bills in your wallet. You select a bill at random. Without
2 answers
asked by
oh
86 views
A survey of a class of 32
students found that 17 students are girls, 11 students participate in clubs, and 10 students both are
7 answers
asked by
DestinyBright
156 views
An airline has81% of its flights depart on schedule. It has 69% of its flights depart and arrive on schedule. Find the
2 answers
asked by
slayrat
115 views
the principal uses a computer to randomly to randomly select the name of a student from all the students in the school. with the
2 answers
asked by
slayrat
112 views
A sporting goods store received an order of 80 baseball caps, of which 12 are green. If 1 of the 80 caps is selected at random,
2 answers
asked by
slayrat
93 views
Calculate each probability, given that P(A)=0.5, P(B)=0.4, and P(A and B)=0.1. P(A|B)
2 answers
asked by
slayrat
66 views
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