The composite ACT scores for Idaho students who took the test in 2019 have average 22.3 with the standard deviation 2.25 and approximately normal distributed. In a random sample of 49 students who took the exam in 2019, the average composite ACT score is 23.5 with standard deviation 1.06.  (show your work) Which one is true? 3 and 2.25 are statistics, and 1.06 are parameters. 3 and 2.25 are parameters, and 1.06 are statistics. All numbers 22.3, 2.25 and 23.5, 1.06 are parameters. All numbers 22.3, 2.25 and 23.5, 1.06 are statistics. What is the probability that the score is 23 or more if we random select one student? Find the 85th percentile the composite ACT scores for Idaho students

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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.