Posted by **Tommy7** on Saturday, June 22, 2013 at 10:39pm.

Consider the following. (Give your answers correct to two decimal places.)

(a) Determine the value of the confidence coefficient z(á/2) for 1 - á = 0.87.

.44 my answer

(b) Determine the value of the confidence coefficient z(á/2) for 1 - á = 0.91.

.45 my answer

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