Posted by **Tommy8** on Saturday, June 22, 2013 at 8:26am.

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.

Can someone please help with these I have no ideal how to start and I also have missed placed my tables that I think will be needed. Really need help