Asked by Webster85
                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.
my answer .44 .
(b) Determine the value of the confidence coefficient z(á/2) for 1 - á = 0.91.
my answer 0.46.
            
            
        (a) Determine the value of the confidence coefficient z(á/2) for 1 - á = 0.87.
my answer .44 .
(b) Determine the value of the confidence coefficient z(á/2) for 1 - á = 0.91.
my answer 0.46.
Answers
                    Answered by
            MathGuru
            
    For one tail, your answers look okay.   For two tails, the values would be multiplied by 2.  
    
                    Answered by
            Tom 12
            
    So I used these answers .44 for the first one and it was wrong then I multiplied 0.46 and used 0.92 and that one was wrong.  Any suggestions??
    
                    Answered by
            Tom 84
            
    We have been at this question for three hours and each time we each come up with different answers...
    
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