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2 years ago

Pls help I don’t know the answer

Mathematics

1 answer:

miskamm [114]2 years ago

8 0

Answer: The two values are: x = ±√2

Step-by-step explanation:

x² - 2 = 0

x² = 2 (add 2 to both sides)

x = √2 (square root each side)

x = ±√2 (when two things are equal, their square roots are equal)

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The probability of being a universal donor is 6% (O-negative-blood type). Suppose that 6 people come to a blood drive.' a) What

Tcecarenko [31]

Answer:

$Mean = 0.36$

$SD = 0.5817$

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Step-by-step explanation:

Given

Let

A = Event of being a universal donor.

So:

$P(A) = 0.06$

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Solving (a): Mean and Standard deviation.

The mean is:

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The standard deviation is:

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Solving (b): P(x = 3)

The event is a binomial event an dthe probability is calculated as:

$P(x) = ^nC_x * p^x * (1-p)^{n-x}$

So, we have:

$P(x=3) = ^6C_3 * 0.06^3 * (1-0.06)^{6-3}$

$P(x=3) = ^6C_3 * 0.06^3 * (1-0.06)^3$

$P(x=3) = 20 * 0.06^3 * (1-0.06)^3$

$P(x=3) = 0.003588$

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2 years ago

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anygoal [31]

Answer:

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