Consider the following. (Give your answers correct to four decimal places.)
(a) Determine the level of confidence given the confidence coefficient z(á/2) for z(á/2) = 1.65.
Incorrect: Your answer is incorrect. .
(b) Determine the level of confidence given the confidence coefficient z(á/2) for z(á/2) = 1.93.
Incorrect: Your answer is incorrect. .
(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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