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Flauer [41]
3 years ago
8

Determine whether or not the distribution is a discrete probability distribution and select the reason why or why not. x −3 4 7

P(X=x) 0.19 0.3 0.51 Answer First, decide whether the distribution is a discrete probability distribution, then select the reason for making this decision.
Mathematics
1 answer:
natta225 [31]3 years ago
7 0

Answer:

The given probability distribution is a discrete probability distribution.

Step-by-step explanation:

We are given the following in the question:

       x:    3        4        7

P(X=x): 0.19    0.3    0.51

Property of discrete probability distribution:

\displaystyle\sum P(x_i) = 1

If the given probability distribution satisfies this property then, it is a discrete probability distribution.

\displaystyle\sum P(x_i)\\\\= 0.19+0.3+0.51 \\= 1

Thus, it satisfies the property for a discrete probability distribution.

Thus, the given probability distribution is a discrete probability distribution.

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a buret is a tool designed to transfer precise amounts of liquid .A buret initially contains 70.00 millimeters of a solution and
katrin [286]

Let:

Vbu= Volume of the buret

Vbk= Volume of the beaker

A buret initially contains 70.00 millimeters of a solution and a beaker initially contains 20.00 ml of the solution the buret drips solution into the Beaker. each drip contains 0.05 mL of solution, therefore:

x = Number of drips

a = volume of each drip

\begin{gathered} Vbu=70-ax \\ Vbk=20+ax \\ \text{where:} \\ a=0.05 \\ Vbu=70-0.05x \\ Vbk=20+0.05x \end{gathered}

after how many drips will the volume of the solution in the buret and beaker be equal ?​ Vbu = Vbk:

\begin{gathered} Vbu=Vbk \\ 70-0.05x=20+0.05x \\ \text{Solve for x:} \\ 0.1x=70-20 \\ 0.1x=50 \\ x=\frac{50}{0.1} \\ x=500 \end{gathered}

5 0
1 year ago
20 if f(x) = 4x + 5, what is the value of f(-3)?<br> A-2<br> B-7<br> C 17<br> 04
Juliette [100K]

Answer:

B. -7

Step-by-step explanation:

f(x) = 4x + 5

To find the value of f(-3), replace all the x's in f(x) with -3.

f(x) = 4x + 5

f(-3) = 4(-3) + 5

f(-3) = -12 + 5

f(-3) = -7.

This makes your answer B, -7.

5 0
3 years ago
HELP PLEASE
Alex787 [66]
The answer that i got for your question is the first answer.
3 0
3 years ago
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Is using the associative property of addition a good strategy for simplifying (4/3 + 2/3) + 2? Why or why not?
Kitty [74]

Answer:

I say yes because when u solve it and flip the ( )'s, you get the same answer.

Step-by-step explanation:

Work:

(4/3 + 2/3) + 2

6/3 + 2

2 + 2

= 4

4/3 + (2/3 + 2)

4/3 + 8/3

12/3

= 4

Hope this helps!!

3 0
3 years ago
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What is 160% of 80kg
andre [41]

Answer:

128kg

Step-by-step explanation:

I don't know how to explain it here the answer

6 0
3 years ago
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