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0 
Questions Answered

hysenberg:
Group Title
probability question:
a bag contains 6 red,4 blue and 5 black balls.if three balls are drawn on succession at random and three different co…
 updated 8 days ago
 9 replies
 No Medals Yet
Mathematics

Michaelmhmhmh:
Group Title
Y is a Poisson distributed random variable with mean λ = 7.2. Determine P(3 ≤ Y ≤ 4 ).
a) 0.0658
b) 0.2450
…
 updated 9 days ago
 3 replies
 1 Medal
Mathematics

geny55:
Group Title
Which is smaller?
Milliliter
…
 updated 11 days ago
 12 replies
 1 Medal
Mathematics

shelbydancer:
Group Title
A mall is having a raffle ticket drawing.
…
 updated 11 days ago
 4 replies
 No Medals Yet
Mathematics

sveta1234:
Group Title
Suppose you flip a coin three times. Find the probability of resulting in two heads.
…
 updated 11 days ago
 7 replies
 1 Medal
Mathematics

jeremyggg:
Group Title
A = {1,2} B = {1,2,3} find the set A x B
is the answer:
…
 updated 11 days ago
 3 replies
 No Medals Yet
Mathematics

Jlockwo3:
Group Title
Calculus. Find the sum
 updated 12 days ago
 24 replies
 3 Medals
Mathematics

Star222:
Group Title
The rectangles shown are similar.
What is the value of x?
…
 updated 12 days ago
 17 replies
 3 Medals
Mathematics

tiffany_rhodes:
Group Title
Suppose that X1, ..., Xn form a random sample of size n from a continuous distribution with the following pdf: f(x) = 2x for 0 < x < 1
Let …
 updated 12 days ago
 2 replies
 1 Medal
Mathematics

Skip2mylou426:
Group Title
Consider an experiment whose sample space consists of a countably infinite number of points. Show that not all points can be equally likely…
 updated 13 days ago
 10 replies
 1 Medal
Mathematics

LXelle:
Group Title
Help me with 6 ii and iii pleasee! http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Mathematics%20(97…
 updated 13 days ago
 36 replies
 1 Medal
Mathematics

trice2964:
Group Title
Scores on a common final exam are normally distributed with mean 71 and standard deviation 9. Department policy is that the top 10% of stude…
 updated 13 days ago
 24 replies
 2 Medals
Mathematics

tiffany_rhodes:
Group Title
Let Xi represent the number of typographical errors on page i of a 500 page book. Suppose that Xi follows a Poisson distribution with parame…
 updated 13 days ago
 5 replies
 2 Medals
Mathematics

geny55:
Group Title
Which of the following waves has the longest wavelength?
Gamma wave
Microwave Visible light
…
 updated 13 days ago
 13 replies
 1 Medal
Mathematics

geny55:
Group Title
In which of the following situations would a line graph be best?
Showing how many different ways data can be grouped.
Showing how large …
 updated 14 days ago
 2 replies
 No Medals Yet
Mathematics

geny55:
Group Title
Frequency is
The number of waves that pass a point in a given time
How tall a wave is
…
 updated 14 days ago
 5 replies
 1 Medal
Mathematics

geny55:
Group Title
What kind of mountains form at convergent boundaries?
Faultblock
Folded
…
 updated 14 days ago
 5 replies
 No Medals Yet
Mathematics

Lindie:
Group Title
which is subspace of p 2 with the usual operations?
a) span (1, x2)
b) (1+ax :a E R)
…
 updated 14 days ago
 1 reply
 No Medals Yet
Mathematics

CrazyCountryGirl:
Group Title
Are these examples of mutation?
http://www.iampleasant.com/wpcontent/uploads/2012/03/geneticmutationexample.jpg
http://cdn7.itsnature…
 updated 13 days ago
 3 replies
 1 Medal
Mathematics

Mathania:
Group Title
For the following system, if you isolated x in the first equation to use the Substitution Method, what expression would you substitute into …
 updated 17 days ago
 3 replies
 No Medals Yet
Mathematics

juana02:
Group Title
Two Coins. Flip two coins 50 times and record the number of times exactly one head was obtained. Determine the empirical probability of fli…
 updated 17 days ago
 8 replies
 No Medals Yet
Mathematics

rvc:
Group Title
help please
 updated 15 days ago
 16 replies
 3 Medals
Mathematics

mk1212:
Group Title
Calculation completed..need help understanding.
A venture capital fund has the mandate to invest in new businesses that may be perceived as…
 updated 17 days ago
 1 reply
 No Medals Yet
Mathematics

H.Hamid:
Group Title
If you draw a card 5 times (with replacement), what's the probability that you'll get exactly 1 ace?
…
 updated 17 days ago
 3 replies
 No Medals Yet
Mathematics

NMarlatt:
Group Title
If P(A)= 0.7, P(B)= 0.4, P(A or B)= 0.8, What is P(A and B)?
A) .3
B) .4
…
 updated 3 months ago
 2 replies
 1 Medal
Mathematics

Taya2016Lynne:
Group Title
What shape is made when a rectangle is rotated about the y axis?
 updated 3 months ago
 14 replies
 2 Medals
Mathematics

Loser66:
Group Title
Let f(x,y) =3/2 \(x^2\leq y \leq 1\) \(0\leq x\leq 1\)
a)find \(P(0\leq X\leq 1/2)\)
b) find \(P (1/2 \leq Y \leq1\)…
 updated 3 months ago
 27 replies
 2 Medals
Mathematics

pyrotechnix92:
Group Title
The average score of students on an anthropology test is 32, and the standard deviation is 3.5. For this normally distributed data, the prob…
 updated 3 months ago
 4 replies
 No Medals Yet
Mathematics

Loser66:
Group Title
Please help at problem 4.2_7
 updated 3 months ago
 4 replies
 1 Medal
Mathematics

rreyes27:
Group Title
please help to prove by a combinatorial argument that rC(n,r) = nC(n1,r1) for 1≤r≤n
 updated 3 months ago
 1 reply
 No Medals Yet
Mathematics
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