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patriot [66]
3 years ago
8

In a large population, 71 % of the people have been vaccinated. If 4 people are randomly selected, what is the probability that

AT LEAST ONE of them has been vaccinated?
Mathematics
1 answer:
Oksi-84 [34.3K]3 years ago
5 0

Answer:

The answer is "0.9929"

Step-by-step explanation:

\text{The distribution in binomials is n = 4 and p = 0.71.}\\\\\text{Vaccinated Pr(AT LEAST ONE) = 1-pr( no people vaccinated ).}

= 1 - Bin (n=4, k =0, p=0.71) \\\\= 1 - C(4,0) \times 0.71^0 \times (1-0.71)^{4-0} \\\\= 1 - (1 \times 0.29^4)

= 1 - (1 \times 0.00707281)\\\\=0.9929

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You are a delivery manager at MN Company, a wholesale lollipop. The
Nady [450]

For the new expectation, 3 drivers and 2 vans are needed.

To determine, for the new expectation, how many drivers and vans do you need, the following calculation must be performed:

  • 8500 x 1.5 = 12750
  • 5000 x 3 = 15000

Therefore, for the new expectation, 3 drivers and 2 vans are needed.

Learn more about maths in brainly.com/question/26173296

3 0
2 years ago
Help pls and thank:)
I am Lyosha [343]

Answer:

y=-3x+2

Step-by-step explanation:

Slope-intercept form is given by the equation y=mx+b, where m is defined as the slope and b is defined as the y-intercept (the value on the y-axis that the line crosses). First we can determine the slope by using the slope formula.

m=(y2-y1)/(x2-x1), given two points (x1, y1) and (x2, y2). Keep in mind you can choose which point is (x1,y1) and which is (x2,y2) as long as you are consistent.

Plugging in for (-1,5) and (1,-1), you will get:

m=(-1-5)/(1-(-1))=-6/2=-3

Next, we need to find the y-intercept. For this problem, you can determine it is 2 by looking at the graph of the line. We now have both components to create the slope-intercept form.

m=-3, b=2

y=-3x+2

3 0
3 years ago
If f(x)= -3-5 and g(x)= 4x-2, find (f-g)(x)
lora16 [44]

Answer:

3^x+6x+2

Step-by-step explanation:

if f(x)= -3-5 and g(x)= 4x-2, find (f-g)(x)=3^x+6x+2

4 0
3 years ago
Solve using elimination<br><br> -3-X=0<br> -3y=-3-2x
ryzh [129]
<h2>The solution is (x, y) = (-3, -1)</h2>

<em><u>Solution:</u></em>

<em><u>Given, system of equations are:</u></em>

-3 - x = 0 --------- eqn 1

-3y = -3 - 2x -------- eqn 2

From eqn 1,

- 3 - x = 0

<h3>x = -3</h3>

<em><u>Substitute x = -3 in eqn 2</u></em>

-3y = - 3 - 2(-3)

-3y = -3 + 6

-3y = 3

<h3>y = -1</h3>

Thus the solution is (x, y) = (-3, -1)

7 0
3 years ago
You can buy 2 DVDs for the same price you would pay for 3 CDs selling for $13.20 a piece.Explain how you could find the price of
egoroff_w [7]
So,

3 CD's sell for $13.20 each.
3 * 13.20 = $39.60

$39.60 is also the price for 2 DVD's.

Divide $39.60 by 2.
$19.80

Each DVD is $19.80.
3 0
3 years ago
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