(a) The sampling distribution of x is (Type exact answers, using radicals (b) P(x<+P(x>- (Round to four decimal places as ne with mean and standard deviation = 0. approximately normal =

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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A factory machine produces a certain copper tubing component in a refrigeration unit. The tubing components produced
by the manufacturer have a mean diameter of 0.75 inch with a standard deviation of 0.004 inch. The quality control
inspector takes a random sample of 30 components once each week and calculates the mean diameter of these
components. If the mean is either less than 0.748 inch or greater than 0.752 inch, the inspector concludes that the
machine needs an adjustment.
(a) Describe the sampling distribution of x, the sample mean diameter, for a random sample of 30 such components.
(b) What is the probability that, based on a random sample of 30 such components, the inspector will conclude that the
machine needs an adjustment whèn, in fact, the machine is correctly calibrated?
(a) The sampling distribution of x is
(Type exact answers, using radicals
(b) P(x<+P(x>=
(Round to four decimal places as ne
approximately normal
skewed left
skewed right
with mean and standard deviation -=-
uniform
Transcribed Image Text:不 A factory machine produces a certain copper tubing component in a refrigeration unit. The tubing components produced by the manufacturer have a mean diameter of 0.75 inch with a standard deviation of 0.004 inch. The quality control inspector takes a random sample of 30 components once each week and calculates the mean diameter of these components. If the mean is either less than 0.748 inch or greater than 0.752 inch, the inspector concludes that the machine needs an adjustment. (a) Describe the sampling distribution of x, the sample mean diameter, for a random sample of 30 such components. (b) What is the probability that, based on a random sample of 30 such components, the inspector will conclude that the machine needs an adjustment whèn, in fact, the machine is correctly calibrated? (a) The sampling distribution of x is (Type exact answers, using radicals (b) P(x<+P(x>= (Round to four decimal places as ne approximately normal skewed left skewed right with mean and standard deviation -=- uniform
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