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Questions Answered

josssss:
Group Title
is the set of whole numbers a group under divison
 updated 2 months ago
 2 replies
 No Medals Yet
Mathematics

KendrickLamar2014:
Group Title
When Mendeleev organized elements in his periodic table in order of increasing mass, elements with similar properties were in the same _____…
 updated 2 months ago
 2 replies
 2 Medals
Mathematics

Loser66:
Group Title
Suppose that 2000 points are selected randomly and independently from the unit square {(x,y) 0<=x<1, 0<=y<1}
Let W equal number of points …
 updated 2 months ago
 9 replies
 2 Medals
Mathematics

Loser66:
Group Title
An urn contains 7 red and 11white balls. Draw one ball at random from the urn. Let X=1 if a red ball drawn, and let X =1 if a white ball is…
 updated 2 months ago
 12 replies
 No Medals Yet
Mathematics

alexeis_nicole:
Group Title
a test consists of 10 multiple choice questions each with five possible answers, one of which is correct. to pass the test a student must ge…
 updated 2 months ago
 1 reply
 2 Medals
Mathematics

lilhaff:
Group Title
In one region. the Sep. energy consumption levels for a singlefamily are to be normally distributed with a mean of 1,050 kWh and standard d…
 updated 2 months ago
 1 reply
 No Medals Yet
Mathematics

Christina25123:
Group Title
Over the first five years of owning her car, Gina drove about 12,700 miles the first year, 15,478 miles the second year, 12,765 the third ye…
 updated 2 months ago
 9 replies
 No Medals Yet
Mathematics

Stephanie1000000:
Group Title
Suppose a normal distribution has mean 10 and standard deviation 2. Find the Zscores of the measurements 9, 10, 11, 14, and 17.
 updated 2 months ago
 6 replies
 No Medals Yet
Mathematics

adikcomel:
Group Title
10 players are shooting at a target. Each player shoots twice and has a similar probability p of hitting the target. Assume that the differe…
 updated 2 months ago
 6 replies
 1 Medal
Mathematics

LavenderLynn:
Group Title
Find the Variance of a Discrete Random Variable
For the # of H when we flip a coin twice in a discrete distribution:
Data (respectively)…
 updated 2 months ago
 1 reply
 No Medals Yet
Mathematics

Sabrinathebruja:
Group Title
f(x) = x^2 + 6x  16
two real rational solutions
g(x) = x^2 +6x + 1
…
 updated 2 months ago
 4 replies
 1 Medal
Mathematics

love_to_love_you:
Group Title
PLEASE HELP. WILL MEDAL AND FAN !
1. Which set of ordered in the form of (x, y) does not represent a function of x?
a) {(1, 2), (3, 2), (0…
 updated 2 months ago
 7 replies
 No Medals Yet
Mathematics

karli_13:
Group Title
the first outcome is one of X, Y, and Z, and the second outcome in each case is one of A and B.
Pr[X] = [ 4/7]
…
 updated 2 months ago
 4 replies
 1 Medal
Mathematics

freshfaced:
Group Title
solve for x:
X^(squarert(logx))=10^(2root2)
…
 updated 2 months ago
 17 replies
 1 Medal
Mathematics

Loser66:
Group Title
Let S is a subset of [0,1] consist of all infinite decimal expansions x =0.a1a2a3...... where all but finitely many digits are 5 or 6. Find …
 updated 2 months ago
 6 replies
 1 Medal
Mathematics

camilacabelllo:
Group Title
WILL FAND AND MEDAL
The regression equation y = 0.5x + 1.3 approximates the number of hours it takes to arrange a dinner event, y, given…
 updated 2 months ago
 2 replies
 2 Medals
Mathematics

aykayyy:
Group Title
Find an example that meets the given specifications:
…
 updated 2 months ago
 2 replies
 No Medals Yet
Mathematics

israrui08:
Group Title
The joint density for N and X is given by...
 updated 2 months ago
 6 replies
 1 Medal
Mathematics

Loser66:
Group Title
Prove or disprove:
\(sup (A\cup B)\geq sup\{sup(A) , sup (B)\}\)
\(sup (A\cup B)= sup\{sup(A) , sup (B)\}\)
…
 updated 2 months ago
 24 replies
 3 Medals
Mathematics

ashton2750:
Group Title
An anonymous survey of college students was taken to determine behaviors regarding alcohol, cigarettes, and illegal drugs. The results were …
 updated 2 months ago
 3 replies
 No Medals Yet
Mathematics

nia_mae:
Group Title
The following box plot shows the number of grams of carbohydrates in 12ounces espresso beverage offered at Starbucks. What is the probabili…
 updated 2 months ago
 13 replies
 1 Medal
Mathematics

IM5er101:
Group Title
How will adding the value 100 affect the mean and median of the data set 1, 5, 7, 7, 9, 10?
A.
…
 updated 2 months ago
 7 replies
 1 Medal
Mathematics

emmadeezy:
Group Title
Solve: b/9 = 2
 updated 2 months ago
 2 replies
 1 Medal
Mathematics

xsorryxnotxlol:
Group Title
jWhat is 76.78 rounded to the nearest whole number?
…
 updated 2 months ago
 1 reply
 No Medals Yet
Mathematics

BulletProof:
Group Title
HELP!
 updated 2 months ago
 8 replies
 No Medals Yet
Mathematics

jerrijones:
Group Title
A sample space consists of five simple events, E1,2,E3,E4,E5
I figured out the first part of the question but the second part is where i'm…
 updated 2 months ago
 2 replies
 1 Medal
Mathematics

JNaruto5796:
Group Title
Find the probabilities associated with the standard normal random variable z
P(z>5)
 updated 2 months ago
 12 replies
 2 Medals
Mathematics

shorty94:
Group Title
if there is a multiple choice test of 9 questions. although only one answer is correct, there are four possible answers. what is the probabi…
 updated 2 months ago
 5 replies
 No Medals Yet
Mathematics

Auxuris:
Group Title
The expansion of (————), where n is a positive integer, has a term that is independent of x.
i) Find the smallest value of n.
…
 updated 2 months ago
 28 replies
 1 Medal
Mathematics

Auxuris:
Group Title
In the expansion of (1+3x)^n, the coefficient of x^3 is 6 times the coefficient of x^2.
Show that nC3 = 2(nC2)
…
 updated 2 months ago
 17 replies
 1 Medal
Mathematics
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