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OpenStudy (anonymous):

HELP!!! stats: Construct an 80% confidence interval about....please see attached image for the details.. :)

OpenStudy (anonymous):

HERE is wh

OpenStudy (anonymous):

here is what I know/ what I have so far...but I don't know how to work with the 80% and turn it into "that part" so I can replace...

OpenStudy (deoxna):

What you're missing is the Z value that gives a 80% confidence interval, or that traps 80% of the curve: |dw:1365049341162:dw| Are you famiiar with the inverse normal distribution?

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