(a) Use a calculator with mean and standard deviation keys to find x and s. (Round your answers to four decimal places.) X = (b) Compute a 90% confidence interval for the population mean u of home run percentages for all professional baseball players. Hint: If you use the Student's t distribution table, be sure to use the closest d.f. that is smaller. (Round your answers to two decimal places.) lower limit upper limit (c) Compute a 99% confidence interval for the population mean u of home run percentages for all professional baseball players. (Round your answers to two decimal places.) lower limit upper limit

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.