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3 years ago

6

For a standard normal distribution, which of the following expressions must always be equal to 1?

2 answers:

frosja888 [35]3 years ago

8 0

For a standard normal distribution, the expression that is always equal to 1 is P(z≤-a)+P(-a≤z≤a)+P(Z≥a). This expression represents all of the possible values in a curve, or in other words, the total area of a curve. According to standard normal distribution, the total area of a curve is always equal to 1.

Alchen [17]3 years ago

4 0

Answer: D

Step-by-step explanation: Edg.

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love history [14]

Answer:

The length of side x is $x = \sqrt{6}$

Step-by-step explanation:

Pythagorean Theorem:

In a right triangle, with sides a and b, and hypothenuse h, we have that:

$a^2 + b^2 = h^2$

In this question:

The vertical line on the sides means that both are equal, that is, measuring x, so $a = b = x$ .

Hypothenuse is the square root of 12. So $h = \sqrt{12}$

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$x^2 = \frac{12}{2}$

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$x = \sqrt{6}$

The length of side x is $x = \sqrt{6}$

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