**9. Find the z-scores that cut off the middle 90% of the graph from the two tails.**The graph is a standard normal distribution curve (bell curve). The shaded area represents the middle 90% of the distribution. The z-scores on the x-axis mark the boundaries of this central region, indicating where the tails (outer 5% on each side) begin.**10. Find the z-scores that cut off the middle 80% of the graph from the two tails.**This graph is also a standard normal distribution curve. The shaded region now covers the middle 80% of the graph. The z-scores on the x-axis denote where the tails (outer 10% divided equally on each side) start.

given data standard normal distributionZ~N(0,1) area under standard normal curve represents…

Answered: 9. Find the z-scores that cut off the…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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7. Find the z-score that cuts off a left tail whose area is 2.5%. 8. Find the z-score that cuts off a right tail whose area is 10.75%.
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9. Find the z-scores that cut off the middle 90% of the graph from the two tails. 0 10. Find the z-scores that cut off the middle 80% of the graph from the two tails.