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daser333 [38]
3 years ago
5

Can you Help me place

Mathematics
2 answers:
Ratling [72]3 years ago
3 0

Answer:

P(w) = 9w+5

Step-by-step explanation:

You see every week there is an increase of 9, and it starts at 5. That's all you need to know for a linear equation.

spayn [35]3 years ago
3 0

Answer:

9w+5

Step-by-step explanation:

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Answer:

(a) The mean or expected value of <em>X </em>is 2.2.

(b) The standard deviation of <em>X</em> is 1.3.

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Let <em>X</em> = number of times the traffic light is red when a commuter passes through the traffic lights.

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The formula to compute the standard deviation of <em>X </em>is:

\sigma=\sqrt{E(X^{2})-(E(X))^{2}}

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(a)

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E(X)=\sum x.P(X=x)\\=(0\times0.06)+(1\times0.25)+(2\times0.35)+(3\times0.15)+(4\times0.13)+(5\times0.06)\\=2.22\\\approx2.2

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(b)

Compute the value of E (X²) as follows:

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\sigma=\sqrt{E(X^{2})-(E(X))^{2}}\\=\sqrt{6.58-(2.22)^{2}}\\=\sqrt{1.6516}\\=1.285\\\approx1.3

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