A sample of 60 Grade 9 students’ ages was obtained to estimate the mean age of all Grade 9 students. X– = 15.3 years and the population variance is 16. a. What is the point estimate for μ? b. Find the 95% confidence interval for μ. c. Find the 99% confidence interval for μ. d. What conclusions can you make based on each estimate?

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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.