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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. . 0.90 is what I got and it was wrong, I have several like this if someone could work this one I could use as example. Thanks in advance.

  • make check -

    za/2 = 1.645

  • make check -

    It gave us the number 1.65

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