Salaries for teachers in a particular elementary school district are normally distributed with a mean of $43,000 and a standard deviation of $6,300. We randomly survey ten teachers from that district.  1 Give the distribution of X. (Enter exact numbers as integers, fractions, or decimals.) 2Give the distribution of ΣX. (Round your answers to two decimal places.) 3 Find the 90th percentile for an individual teacher's salary. (Round your answer to the nearest whole number.) 4Find the 90th percentile for the sum of ten teachers' salary. (Round your answer to the nearest whole number.)

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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.