3. Assume that you have a random sample of 100 countries and you are interested in unemployment rates but you do not know the population parameters. Your sample mean is 6.7 and you sample standard deviation is 1.9. Complete the following a. What is your single best guess average employment rate of all the countries in the world? b. Calculate the Confidence Interval (CI) at 90% confidence c. Calculate CI at 95% confidence

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Q: Of the following general derivations, choose the formula that you need for computing a confidence…

A: Confidence interval = ??

Q: Which of the following describes the function of a confidence interval? Select one: a. It uses a…

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A: n=sample size=100, X¯=54.8,s=7.9

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Q: suppose you obtained a mean of $167 spent on transportation and a standard deviation of $40.…

A: To calculate confidence interval for a population, we can use the formula shown below.

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