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3 years ago

How much candy will each person get if 5 people share 5/8 pound of candy equaly

Mathematics

2 answers:

AVprozaik [17]3 years ago

8 0

They will each get 1/8 of a pound of candy

velikii [3]3 years ago

8 0

Each person will get 1/8 pound of candy. 5/8 ÷ 5

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A commuter must pass through 5 traffic lights on her way to work and will have to stop at each one that is red. She estimates th

sergij07 [2.7K]

Answer:

(a) The mean or expected value of X is 2.2.

(b) The standard deviation of X is 1.3.

Step-by-step explanation:

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

The probability distribution of X id provided.

The formula to compute the mean or expected value of X is:

$\mu=E(X)=\sum x.P(X=x)$

The formula to compute the standard deviation of X is:

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

The formula of E (X²) is:

$E(X^{2})=\sum x^{2}.P(X=x)$

(a)

Compute the expected value of X as follows:

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

Thus, the mean or expected value of X is 2.2.

(b)

Compute the value of E (X²) as follows:

$E(X^{2})=\sum x^{2}.P(X=x)\\=(0^{2}\times0.06)+(1^{2}\times0.25)+(2^{2}\times0.35)+(3^{2}\times0.15)+(4^{2}\times0.13)+(5^{2}\times0.06)\\=6.58$

Compute the standard deviation of X as follows:

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

Thus, the standard deviation of X is 1.3.

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3 years ago

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If the radius of the circle is 4 cm, find its circumference. [Use 3.14 for π.]

vlabodo [156]

Answer:

B.25.12

Step-by-step explanation:

Solution

C=2πr=2·π·4≈25.13274cm

Hope this helps!

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3 years ago

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Orlov [11]

1627190 there's your answer.

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the perimeter of a rectangle is 70m. What are the dimensions that will produce the maximum area of such a rectangle

rusak2 [61]

Answer:

17.5, divide 70 by 4

Step-by-step explanation:

what i said above

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A sequence is a function whose is the set of natural numbers. Answer here Need help!!!!

Harrizon [31]

Or a subset of the natural numbers.

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