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1. statistics practitioner drew a random sample of 400 observations and found that x? and . Estimate the population mean with 90% confidence.  2. Repeat part (1) with a 95% confidence level.3. Repeat part (1) with a 99% confidence level.4. What is the effect on the confidence interval estimate of increasing the confidence level?

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1. statistics practitioner drew a random sample of 400 observations and found that x? and . Estimate the population mean with 90% confidence.  2. Repeat part (1) with a 95% confidence level.3. Repeat part (1) with a 99% confidence level.4. What is the effect on the confidence interval estimate of increasing the confidence level?

Do you similar assignment and would want someone to complete it for you? Click on the ORDER NOW option to get instant services at LindasHelp.com