In a 2018 random survey of 160 American Democrats, 136 said that they support Medicare for al also kown as single payer healthcare.  Find the 95% confidence interval estimate for the true proportion of Democrats in America who support Medicare for all. (A)   Identify point estimate (sample proportion);  (B) Determine critical value z  a/2.  (C)  Find margine of error.   (D) Construct confidence interval.  (E)   Interpretation of Ci.

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