The piston diameter of a certain hand pump is 0.45 inch. The manager determines that the diameters are normally distributed, with a mean of 0.45 inch and a standard deviation of 0.004 inch. After recalibrating the production machine, the manager randomly selects 29 pistons and determines that the standard deviation is 0.0025 inch. Is there significant evidence for the manager to conclude that the standard deviation has decreased at the a= 0.05 level of significance? Click the icon to view the chi-square distribution table. Are the requirements met to perform this test? Because the sample What are the correct hypotheses for this test? Ho: versus H₁: (Type integers or decimals. Do not round.) Calculate the value of the test statistic. x = (Round to two decimal places as needed.) Approximate the P-value for the test statistic. Choose the correct answer below. obtained using simple random sampling and the population OA. The P-value is less than 0.005. B. The P-value is between 0.01 and 0.025. C. The P-value is greater than 0.10. D. The P-value is between 0.05 and 0.10. E. The P-value is between 0.005 and 0.01. O F. The P-value is between 0.025 and 0.05. normally distributed, the requirements for testing the hypothesis satisfied.
The piston diameter of a certain hand pump is 0.45 inch. The manager determines that the diameters are normally distributed, with a mean of 0.45 inch and a standard deviation of 0.004 inch. After recalibrating the production machine, the manager randomly selects 29 pistons and determines that the standard deviation is 0.0025 inch. Is there significant evidence for the manager to conclude that the standard deviation has decreased at the a= 0.05 level of significance? Click the icon to view the chi-square distribution table. Are the requirements met to perform this test? Because the sample What are the correct hypotheses for this test? Ho: versus H₁: (Type integers or decimals. Do not round.) Calculate the value of the test statistic. x = (Round to two decimal places as needed.) Approximate the P-value for the test statistic. Choose the correct answer below. obtained using simple random sampling and the population OA. The P-value is less than 0.005. B. The P-value is between 0.01 and 0.025. C. The P-value is greater than 0.10. D. The P-value is between 0.05 and 0.10. E. The P-value is between 0.005 and 0.01. O F. The P-value is between 0.025 and 0.05. normally distributed, the requirements for testing the hypothesis satisfied.
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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Transcribed Image Text:□ < >
MATL
Are the requirements met to perform this test?
Because the sample
What are the correct hypotheses for this test?
Ho:
versus H₂₁:
(Type integers or decimals. Do not round.)
Calculate the value of the test statistic.
K
The piston diameter of a certain hand pump is 0.45 inch. The manager determines that the diameters are normally distributed, with a mean of 0.45 inch and a standard deviation of 0.004 inch. After
recalibrating the production machine, the manager randomly selects 29 pistons and determines that the standard deviation is 0.0025 inch. Is there significant evidence for the manager to conclude
that the standard deviation has decreased at the a= 0.05 level of significance?
Click the icon to view the chi-square distribution table.
2
sercon com
=
obtained using simple random sampling and the population
(Round to two decimal places as needed.)
Approximate the P-value for the test statistic. Choose the correct answer below.
A. The P-value is less than 0.005.
B. The P-value is between 0.01 and 0.025.
C. The P-value is greater than 0.10.
D. The P-value is between 0.05 and 0.10.
E. The P-value is between 0.005 and 0.01.
F. The P-value is between 0.025 and 0.05.
normally distributed, the requirements for testing the hypothesis
Z
satisfied.
+ 0
=
INCAL
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