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(a)

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if $\"\"$ then $\"\"$

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Preliminary analysis of the problem

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if $\"\"$ then $\"\"$

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But,

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$\"\"$

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Therefore we want $\"\"$ such that

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if $\"\"$ then $\"\"$

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if $\"\"$ then $\"\"$

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if $\"\"$ then $\"\"$

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$\"\"$

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(b)

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if $\"\"$ then $\"\"$

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Preliminary analysis of the problem

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if $\"\"$ then $\"\"$

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But,

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$\"\"$

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Therefore we want $\"\"$ such that

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if $\"\"$ then $\"\"$

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if $\"\"$ then $\"\"$

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if $\"\"$ then $\"\"$

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$\"\"$

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(a) 0.025, (b) 0.0025.

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