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Probability and Statistics
Page 2
Questions (4,630)
Helen has some black tiles, some white tiles and some grey tiles. She places a single row of
8 tiles above her washbasin. Each
4 answers
asked by
Raj
2,814 views
When you enter the bank, you find that there are only two tellers, both busy serving other customers, and that there are no
4 answers
asked by
Chris
3,937 views
Suppose that we have three engines, which we turn on at time 0. Each engine will eventually fail, and we model each engine's
7 answers
asked by
Anonymous
4,230 views
The numbers of cookies in a shipment of bags are normally distributed, with a mean of 64 and a standard deviation of 4. What
7 answers
asked by
Skye
8,181 views
Use the spinner to simulate the random selection of two letters with repetition from the word CLEAN. This will constitute one
2 answers
asked anonymously
183 views
1.
You flip a coin 30 times and get heads 11 times, so the chance of getting heads is eleven over thirty . Is this an example of
82 answers
asked by
Delilah
29,243 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
10,705 views
outcomes : 2, 4, 6, 8, 10, 12
Frequency : 10, 9, 6, 15, 13, 8 Jede tossed a cube with faces numbered with 2, 4, 6, 8, 10, and 12.
2 answers
asked by
Koiiiii
248 views
If 8% of the population of trees are elm trees, find the probability that in a sample in a sample of 100 trees, there are
6 answers
asked by
Michelle
4,224 views
A dice game involves rolling 2 dice. If you roll a 2, 3, 4, 10, 11, or a 12 you win $5. If you roll a 5, 6, 7, 8, or 9 you lose
5 answers
asked by
Rosmery
10,233 views
A letter is to be randomly picked from the word MISSISSIPPI. Which set of letters have equal chances to be selected?
A- S and I
4 answers
asked by
just living :>
483 views
A deck from a card game is made up of about 108 cards. Twenty-five of them are red, yellow, blue, and green, and eight are wild
6 answers
asked by
Jackie
5,059 views
if the bowl contains 5 red marbles 7 blue marbles and 8 white marbles what is the probability you will draw a red or blue
6 answers
asked by
Maria
2,206 views
3 letters are typed, with repetition allowed. What is the probability that all 3 will be vowels? Write your answer as a percent.
5 answers
asked by
Berta
5,336 views
Bowls A and B contain a number of white and red balls. Clark repeatedly selected a ball from both bowls and recorded the results
2 answers
asked by
:)
306 views
A money envelope contains five $10 bills, ten $20 bills, and fifteen $50 bills. Sandra randomly selects two bills without
3 answers
asked anonymously
224 views
If the arrow is spun twice, what is the probability of getting
a, two 3s b, two 4s c,a 1 followed by a 2 d,a 4 followed by a 3
2 answers
asked by
peter
99 views
7 girls audition for 12 roles in a school play. What is the probability that at least 2 of the girls audition for the same part?
6 answers
asked by
jenny
2,834 views
Astronomers treat the number of stars in a given volume of space as a Poisson random variable. The density in the Milky Way
5 answers
asked by
Ashley
5,707 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
1,537 views
a) In a supermarket, the average arrival rate of customers is 10 every 30 minutes, following Poisson process. The average time
1 answer
asked anonymously
159 views
A middle school has 450 students. In a random sample of 100 students, 8 students indicated that they have traveled outside the
1 answer
asked anonymously
101 views
PROBLEM 2
Let X and Y be independent random variables, with X uniformly distributed on [0,1] and Y uniformly distributed on
4 answers
asked by
SC
2,341 views
The life time of a certain kind of batteries has a mean life of 400 hours and standard deviation as 45 hours. Assuming the
4 answers
asked by
Kruti
2,666 views
et X and Y be independent Erlang random variables with common parameter λ and of order m and n, respectively. Is the random
4 answers
asked by
David
1,353 views
Consider a Poisson process with rate lambda = 2 and let T be the time of the first arrival.
1. Find the conditional PDF of T
9 answers
asked by
SC
3,970 views
In a company there are 7 executives: 4 women and 3 men. 3 are selected to attend a management seminar. Find these probabilities.
5 answers
asked by
Reuben Musundi
5,625 views
1. Suppose you spin the spinner once. Find the probability.
R, R, R, R, B, B, G, Y P(yellow) A. 1/8*** B. 1/6 C. 1/4 D. 1/2 2.
40 answers
asked by
slush
9,862 views
A number cube is rolled 100 times. The results are shown in the table below.
Outcome: 1, 2, 3, 4, 5, 6. Number of times rolled:
22 answers
asked by
Help! pls
7,090 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
1,321 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
895 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
661 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
1,678 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
5,333 views
For each one of the following figures, identify if it is a valid CDF. The value of the CDF at points of discontinuity is
4 answers
asked by
RVE
4,239 views
A die is tossed. Find the odds against rolling a number greater than 2
The odds against rolling a number greater than 2 are __ :
4 answers
asked by
Beth
13,097 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
25,403 views
Bowls A and B contain a number of white and red balls. Clark repeatedly selected a ball from both bowls and recorded the results
3 answers
asked by
Yo mama
931 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
3,421 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
19,989 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
20,827 views
A survey shows that 15% of men in a certain town are tall. if a man is chosen on the street of the town are afternoor. What is
7 answers
asked by
Amadou kanteh
1,573 views
A newly-opened restaurant has 5 menu items. If the first 4 customers each choose one menu item uniformly at random, the
6 answers
asked by
anonymous
3,728 views
6 black counters and 4 white counters in bag A.
7 black counters and 3 white counters in bag B. 5 black counters and 5 white
7 answers
asked by
Alexander
5,973 views
Two identical biased coins are tossed together, and the outcome is recorded. After a large number of trials it is observed that
4 answers
asked by
Harry
1,425 views
if you roll a die 54 times how many times would you expect it to land on 6
5 answers
asked by
anna vullo
1,002 views
Bonita bought her mom a charm bracelet. Each charm is labeled with a one-word message.
What is the probability that the 5 charms
3 answers
asked by
nfngs
1,004 views
T and M are events such that n(U)=30, n(M)=17, n(T)=10, n((TUM)')=5
Draw a Venn diagram to display this information Hence find
4 answers
asked by
didier
1,643 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
2,366 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
1,140 views
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