1) Find the z value to the left of the mean so that

• 98.87% of the area under the distribution curve lies to the right of it.
• 82.12% of the area under the distribution curve lies to the right of it.
• 60.64% of the area under the distribution curve lies to the right of it.

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2) Find the z value to the right of the mean so that

• 54.78% of the area under the distribution curve lies to the left of it.
• 69.85% of the area under the distribution curve lies to the left of it.
• 88.10% of the area under the distribution curve lies to the left of it.

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3) Find two z values, one positive and one negative, that are equidistant from the mean so thatthe areas in the two tails add to the following values.

• 5%
• 10%
• 1%

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4) Find two z values so that 48% of the middle area is bounded by them.