FRAME 54.

Suppose we want to find the area under the curve between u + 1σ and u + 2σ . This area

cannot be measured directly because one edge doesn't lie on the mean. Since the relationship

between the area under the curve and the distance on the horizontal base line is measured from

the mean, this area must be found indirectly. we can find the area from u to u + 2σ (47.5%) and

the area from u + 1σ (345). The area from u to u + 2σ includes the area from u to u + 1σ. 8y

subtracting the smaller area from the larger area we eliminate this common area. what's left is

the area from u + 1σ to u + 2σ, or 47.5% - 34% - 13.5%.

QUESTION:

What is the area under the curve from u - 2σ to u - 3σ? Draw a diagram and shade the area in

question.

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