The cross-sectional area of plastic tubing for use in pulmonary resuscitators isnormally distributed with mean 12mm² and standard deviation 0.5mm². A randomsample of 12 tubes is selected for inspection.Question 2:a) What is the probability that one of the tubes has a cross-sectional area lessthan 11.5mm2?b) What is the probability that the sample mean of the tubes is more than11.5mm??c) Of the 12 tubes samples, how many would you expect to have a cross-sectional area less than 11.5mm²?d) What is the probability that exactly half of the tubes sampled have a cross-sectional area less than 11.5mm²?

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The cross-sectional area of plastic tubing for use in pulmonary resuscitators is normally distributed with mean 12mm² and standard deviation 0.5mm². A random sample of 12 tubes is selected for inspection. a) What is the probability that one of the tubes has a cross-sectional area less than 11.5mm²? b) What is the probability that the sample mean of the tubes is more than 11.5mm²? c) Of the 12 tubes samples, how many would you expect to have a cross- sectional area less than 11.5mm²? d) What is the probability that exactly half of the tubes sampled have a cross- sectional area less than 11.5mm²?

The cross-sectional area of plastic tubing for use in pulmonary resuscitators is normally distributed with mean 12mm² and standard deviation 0.5mm². A random sample of 12 tubes is selected for inspection. a) What is the probability that one of the tubes has a cross-sectional area less than 11.5mm²? b) What is the probability that the sample mean of the tubes is more than 11.5mm²? c) Of the 12 tubes samples, how many would you expect to have a cross- sectional area less than 11.5mm²? d) What is the probability that exactly half of the tubes sampled have a cross- sectional area less than 11.5mm²?

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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Question

The cross-sectional area of plastic tubing for use in pulmonary resuscitators is
normally distributed with mean 12mm² and standard deviation 0.5mm². A random
sample of 12 tubes is selected for inspection.
Question 2:
a) What is the probability that one of the tubes has a cross-sectional area less
than 11.5mm2?
b) What is the probability that the sample mean of the tubes is more than
11.5mm??
c) Of the 12 tubes samples, how many would you expect to have a cross-
sectional area less than 11.5mm²?
d) What is the probability that exactly half of the tubes sampled have a cross-
sectional area less than 11.5mm²?

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