(Answered) The bold and italics portion is as far as ive gotten with

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The bold and italics portion is as far as I've gotten with the equation. Help me finish? And am I on the right track?

A survey showed that 1200 of the 1600 adult respondents believe in global warming.

(a) Construct a 95% confidence interval estimate of the proportion of adults believing in global warming. Show all work. Just the answer, without supporting work, will receive no credit. Include description of how confidence interval was constructed.

0.75+/-sqrt[0.75*0.25/1600]*?=

(b) Describe the confidence interval in everyday language.

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