Calculate a 95% confidence interval for the true proportion

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Of the 400 customers who were randomly surveyed, 288 believed that Climate Change was a concern.

Calculate a 95% confidence interval for the true proportion of all Australians that believe that Climate Change is a concern. (Show your calculations)

Interpret your answer.
In part i, we have used a confidence level of 95%. What does the confidence level mean? Do we always use 95%? Explain. (No calculations required)

Reference no: EM133256943

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