A research firm conducted a survey to determine the mean amount Americans spend on coffee during a week. They found the distribution of weekly spending followed the normal distribution with a population standard deviation of $5. A sample of 49 Americans revealed that X = $20. a. What is the point estimate of the population mean? Estimated population mean b. Using the 95% level of confidence, determine the confidence interval for u. (Round your answers to 2 decimal places.) Confidence interval for the population mean is and

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