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

2 answers:

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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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