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0 
Questions Answered

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 one month 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 one month 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 one month 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 one month 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 one month 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 one month 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 one month 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 one month 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 one month 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 one month ago
 4 replies
 1 Medal
Mathematics

freshfaced:
Group Title
solve for x:
X^(squarert(logx))=10^(2root2)
…
 updated one month 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 one month 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 one month ago
 2 replies
 2 Medals
Mathematics

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

israrui08:
Group Title
The joint density for N and X is given by...
 updated one month 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 one month 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 one month 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 one month 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 one month ago
 7 replies
 1 Medal
Mathematics

purplepiggy171:
Group Title
What set of reflections would carry triangle ABC onto itself?
yAxis, x axis, yaxis, x axis
x axis, yx, y axis, x axis
…
 updated one month ago
 9 replies
 No Medals Yet
Mathematics

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

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

BulletProof:
Group Title
HELP!
 updated one month 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 one month ago
 2 replies
 1 Medal
Mathematics

JNaruto5796:
Group Title
Find the probabilities associated with the standard normal random variable z
P(z>5)
 updated one month 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 one month 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 one month 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 one month ago
 17 replies
 1 Medal
Mathematics

israrui08:
Group Title
Suppose f(x,y)=[2/n(n+1)]^2 xy, x,y=1,2,...n.(ie. discrete variables. Are x and y independent?
To be independet, fxy=(fx)(fy)
 updated one month ago
 9 replies
 1 Medal
Mathematics

JayTag:
Group Title
Let f(x)=1/x. Compute the difference quotient for f(x) at x=5 with h=0.2
Use the Power Rule to compute the derivative:
…
 updated one month ago
 23 replies
 1 Medal
Mathematics
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