need help with 40 introduction to statistics problems will provide the screen shots of the problems i need help with

The problems you will be helping me with will have to do with:

Express confidence intervals in various formats.

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struct and interpret confidence intervals for population proportions.

here is a few sample problems :

1) Find the critical value z Subscript alpha divided by 2zα/2

that corresponds to the given confidence level.

87%

2) Find the critical value

z Subscript alpha divided by 2zα/2

that corresponds to the confidence level

87%

 
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