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Rudik [331]
3 years ago
8

PLEASE HELP!! WHOEVER GETS IT CORRECT GETS BRAINLIEST!!! By the way, 2 people need to answer so I can mark brainliest.

Mathematics
2 answers:
12345 [234]3 years ago
8 0

Answer:

can you please tell us the question?

MrRissso [65]3 years ago
4 0

Answer:

what do you mean ?? i don't understand it con you tell us the question

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Let x and y be independent each uniformly distributed on {1,2,...,n} find p(x < y )
bulgar [2K]
If we draw the contingency table of x (vertical) against y (horiz.), we have a square.
For n=4, we have   (legend:  < : x<y   = : x=y   > : x>y

y      1  2  3  4
x
1      = <  <  <
2      > =  <  < 
3      >  >  = <
4      >  >  >  =

We see that there are n(n-1)/2 cases of x<y out of n^2.
Therefore, 
p(x<y)=n(n-1)/(2n^2)=(n-1)/(2n)

However, if the sample space is continuous, it will be simply p(x<y)=1/2.

8 0
2 years ago
The owner of a small restaurant bought 75 kilograms of rice. Each week, the restaurant uses 4.5 kilograms of rice.
leva [86]

Answer:

6 weeks 27kilo

12 weeks 54 kilo

Step-by-step explanation:

4.5*12=54

4.5*6=27

3 0
3 years ago
Find the length of the radius for this circle.
pychu [463]
We know that the 8 represent the squared radius of the circle so to get the radius we should take the square root of 8 
the answer is √8 = 2√2
7 0
3 years ago
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Beth is making fruit salad. She adds 3 grapes for every 2 strawberries. If she uses 12 strawberries, how many grapes will she us
Diano4ka-milaya [45]
The answer is 18. she will use 18 grapes.
5 0
2 years ago
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If the point (3,4) lies on the graph of the equation 3y=ax+7 ,find the value of a
Daniel [21]

3y = ax + 7

3(4) = a(3) + 7

12 = 3a + 7

3a = 5

a = 5/3

5 0
2 years ago
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