Kimberly and Alexis began arguing about who did better on their tests, but they couldn't decide who did better given that they took different tests. Kimberly took a test in Math and earned a 76.4, and Alexis took a test in Social Studies and earned a 63.2. Use the fact that all the students' test grades in the Math class had a mean of 76.8 and a standard deviation of 9.9, and all the students' test grades in Social Studies had a mean of 62.6 and a standard deviation of 9 to answer the following questions. a) Calculate the z-score for Kimberly's test grade. z=z= [Round your answer to two decimal places.] b) Calculate the z-score for Alexis's test grade. z=z= [Round your answer to two decimal places.]

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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.