Central Limit Theorem: The Rockwell hardness of certain metal pins is known to have a mean of 50 and a stan- dard deviation of 1.5 (Round your answers to 4 decimal places). (a) If the distribution of all such pin hardness measurements is known to be normal, what is the probability that the mean hardness for a random sample of 9 pins is at least 52? (a). (b) What is the approximate probability that the mean hard- a random sample of 40 pins is at least 52? ness (b).

Central Limit Theorem: The Rockwell hardness of certain metal pins is known to have a mean of 50 and a stan- dard deviation of 1.5 (Round your answers to 4 decimal places). (a) If the distribution of all such pin hardness measurements is known to be normal, what is the probability that the mean hardness for a random sample of 9 pins is at least 52? (a). (b) What is the approximate probability that the mean hard- a random sample of 40 pins is at least 52? ness (b).

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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