math help

Please help me on these I have lost the tables that I would need to answer them or at least the ones I think are used.
(a) Determine the level of confidence given the confidence coefficient z(á/2) for z(á/2) = 1.65.

(b) Determine the level of confidence given the confidence coefficient z(á/2) for z(á/2) = 1.93. .

(c) Determine the level of confidence given the confidence coefficient z(á/2) for z(á/2) = 2.17.

(d) Determine the level of confidence given the confidence coefficient z(á/2) for z(á/2) = 2.41.

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1. Never mind with the help, I tried for a week and no one would help, just skipped my questions. But thanks

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posted by Tommy7

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