The piston diameter of a certain hand pump is 0.8 inch. The manager determines that the diameters are normally distributed, with a mean of 0.8 inch and a standard deviation of 0.006 inch. After recalibrating the production machine, the manager randomly selects 21 pistons and deterrmines that the standard deviation is 0.0042 inch. Is there significant evidence for the manager to conclude that the standard deviation has decreased at the a= 0.05 level of significance? What are the correct hypotheses for this test? The null hypothesis is H: The alternative hypothesis is H, Use the chi-square table to find the critical value, (Round to three decimal places as needed.) Calculate the value of the test statistic. x2 = (Round to three decimal places as needed.) What is the correct conclusion at the a= 0.05 level of significance? V the null hypothesis. There V sufficient evidence to conclude that the standard deviation has decreased at the 0.05 level of significance.
The piston diameter of a certain hand pump is 0.8 inch. The manager determines that the diameters are normally distributed, with a mean of 0.8 inch and a standard deviation of 0.006 inch. After recalibrating the production machine, the manager randomly selects 21 pistons and deterrmines that the standard deviation is 0.0042 inch. Is there significant evidence for the manager to conclude that the standard deviation has decreased at the a= 0.05 level of significance? What are the correct hypotheses for this test? The null hypothesis is H: The alternative hypothesis is H, Use the chi-square table to find the critical value, (Round to three decimal places as needed.) Calculate the value of the test statistic. x2 = (Round to three decimal places as needed.) What is the correct conclusion at the a= 0.05 level of significance? V the null hypothesis. There V sufficient evidence to conclude that the standard deviation has decreased at the 0.05 level of significance.
MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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The piston diameter of a certain hand pump is 0.8 inch. The manager determines that the diarneters are normally distributed, with a mean of 0.8 inch and a standard
deviation of 0.006 inch. After recalibrating the production machine, the manager randomly selects 21 pistons and determines that the standard deviation is 0.0042
inch. Is there significant evidence for the manager to conclude that the standard deviation has decreased at the a= 0.05 level of significance?
What are the correct hypotheses for this test?
The null hypothesis is H:
The alternative hypothesis is H,:
Use the chi-square table to find the critical value.
(Round to three decimal places as needed.)
Calculate the value of the test statistic.
x2 =
(Round to three decimal places as needed.)
Advai
What is the correct conclusion at the a= 0.05 level of significance?
V the null hypothesis. There
V sufficient evidence to conclude that the standard deviation has decreased at the 0.05 level of significance.
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The piston diameter of a certain hand pump is 0.8 inch. The manager determines that the diarneters are normally distributed, with a mean of 0.8 inch and a standard
deviation of 0.006 inch. After recalibrating the production machine, the manager randomly selects 21 pistons and determines that the standard deviation is 0.0042
inch. Is there significant evidence for the manager to conclude that the standard deviation has decreased at the a= 0.05 level of significance?
What are the correct hypotheses for this test?
The null hypothesis is H:
The alternative hypothesis is H,:
Use the chi-square table to find the critical value.
(Round to three decimal places as needed.)
Calculate the value of the test statistic.
x2 =
(Round to three decimal places as needed.)
Advai
What is the correct conclusion at the a= 0.05 level of significance?
V the null hypothesis. There
V sufficient evidence to conclude that the standard deviation has decreased at the 0.05 level of significance.
About
Enter your answer in the edit fields and then click Check Answer.
Clear All
Check Answer
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