The time it takes for Grade 11 students in a certain school to complete a physical fitness test is normally distributed with mean 15 minutes and a standard deviation of 4 minutes.   What is the corresponding z-score of 12.5 minutes? A. − 0.63      B. −0.62  C. 0.62    D. 0.63   17. What is the probability that a student completes the physical fitness less than 14 minutes? A. 40.52% B. 40.13% C. 39.74% D. 39.36%   18.What is the longest time to complete the test of a student whose time belong to the middle 60% of all recorded times? A. 11.64 min B. 16 min C. 17.53 min D. 18.36 min

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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.