A Normal Distribution Has a Mean of µ = 70

question 40

Multiple Choice

A normal distribution has a mean of µ = 70 with σ = 12.If one score is randomly selected from this distribution,what is the probability that the score will be less than X = 55?​

• A)​0.3944
• B)​0.1056
• C)​0.8944
• D)​0.7888

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Definitions:

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A graphical representation of a normal distribution, showing how data points are symmetrically distributed around the mean.

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A curve that depicts a process of growth or spread, starting off slowly, increasing rapidly, and then leveling off, resembling the shape of the letter "S".