Vll upvote, and will share positive feedback also. KThe average income tax refund for the 2009 tax year was $3071. Assume the refund per person follows the normal probability distribution with a standard deviation of $984. Complete parts a throughd below.a. What is the probability that a randomly selected tax return refund will be more than $200078621 (Round to four decimal places as needed.)CITEDb. What is the probability that a randomly selected tax return refund will be between $1400 and $20007(Round to four decimal places as needed.)97

Mean(µ) = 3071Standard deviations (σ) = 984X ~ N (µ, σ )= N(3071,984)

The average income tax refund for the 2009 tax year was $3071. Assume the refund per person follows the normal probability distribution with a standard deviation of $984. Complete parts a through K d below a. What is the probability that a randomly selected tax return refund will be more than $20007 8621 (Round to four decimal places as needed.) GD b. What is the probability that a randomly selected tax return refund will be between $1400 and $20007 (Round to four decimal places as needed.)

The average income tax refund for the 2009 tax year was $3071. Assume the refund per person follows the normal probability distribution with a standard deviation of $984. Complete parts a through K d below a. What is the probability that a randomly selected tax return refund will be more than $20007 8621 (Round to four decimal places as needed.) GD b. What is the probability that a randomly selected tax return refund will be between $1400 and $20007 (Round to four decimal places as needed.)

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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