Salaries for teachers in a particular elementary school district are normally distributed with a mean of $41,000 and a standard deviation of $6,200. We randomly survey ten teachers from that district. Part (d) Give the distribution of EX. (Round your answers to two decimal places.) EX-N (4100 62000 Part (e) Find the probability that the teachers earn a total of over $400,000. (Round your answer to four decimal places.) 0.6947 Part (f) Find the 70th percentile for an individual teacher's salary. (Round your answer to the nearest whole number.) $ 14200 Part (g) Find the 70th percentile for the sum of ten teachers' salary. (Round your answer to the nearest whole number.) $ 420273
Salaries for teachers in a particular elementary school district are normally distributed with a mean of $41,000 and a standard deviation of $6,200. We randomly survey ten teachers from that district. Part (d) Give the distribution of EX. (Round your answers to two decimal places.) EX-N (4100 62000 Part (e) Find the probability that the teachers earn a total of over $400,000. (Round your answer to four decimal places.) 0.6947 Part (f) Find the 70th percentile for an individual teacher's salary. (Round your answer to the nearest whole number.) $ 14200 Part (g) Find the 70th percentile for the sum of ten teachers' salary. (Round your answer to the nearest whole number.) $ 420273
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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