The daily number of aluminium rolls produced in a manufacturer of aluminium products is believed to be approximately Normally distributed with a mean 72 and variance 8. As a fresh engineering inter, Alice has recorded the total output for 21 days and found a sample variance of 25. Based on her observations, she wants to infer whether the popuation variance can be considered valid or not. She picks an arbitrary but reasonable confidence level to conclude her analysis. Click here to view page 1 of the table of critical values of the chi-squared distribution. Click here to view page 2 of the table of critical values of the chi-squared distribution, Alice calculates a x value which is equal toO. Since it is (Round to three decimal places including any zeros.) V (critical value is chosen arbitrarily), she can argue that the population variance V valid. greater than x0 01 less than Xo,10

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The daily number of aluminium rolls produced in a manufacturer of aluminium products is believed to be approximately Normally distributed with a mean 72 and variance 8. As a fresh engineering intern, Alice has recorded the total
output for 21 days and found a sample variance of 25. Based on her observations, she wants to infer whether the popuation variance can be considered valid or not. She picks an arbitrary but reasonable confidence level to conclude
her analysis.
Click here to view page 1 of the table of critical values of the chi-squared distribution.
Click here to view page 2 of the table of critical values of the chi-squared distribution.
Alice calculates a x value which is equal to |. Since it is
V (critical value is chosen arbitrarily), she can argue that the population variance
valid.
(Round to three decimal places including any zeros.)
is not
is
Transcribed Image Text:The daily number of aluminium rolls produced in a manufacturer of aluminium products is believed to be approximately Normally distributed with a mean 72 and variance 8. As a fresh engineering intern, Alice has recorded the total output for 21 days and found a sample variance of 25. Based on her observations, she wants to infer whether the popuation variance can be considered valid or not. She picks an arbitrary but reasonable confidence level to conclude her analysis. Click here to view page 1 of the table of critical values of the chi-squared distribution. Click here to view page 2 of the table of critical values of the chi-squared distribution. Alice calculates a x value which is equal to |. Since it is V (critical value is chosen arbitrarily), she can argue that the population variance valid. (Round to three decimal places including any zeros.) is not is
The daily number of aluminium rolls produced in a manufacturer of aluminium products is believed to be approximately Normally distributed with a mean 72 and variance 8. As a fresh engineering intern, Alice has recorded the total
output for 21 days and found a sample variance of 25. Based on her observations, she wants to infer whether the popuation variance can be considered valid or not. She picks an arbitrary but reasonable confidence level to conclude
her analysis.
Click here to view page 1 of the table of critical values of the chi-squared distribution.
Click here to view page 2 of the table of critical values of the chi-squared distribution.
Alice calculates a x value which is equal to. Since it is
V (critical value is chosen arbitrarily), she can argue that the population variance
valid
(Round to three decimal places including any zeros.)
greater than x6.01
less than
Transcribed Image Text:The daily number of aluminium rolls produced in a manufacturer of aluminium products is believed to be approximately Normally distributed with a mean 72 and variance 8. As a fresh engineering intern, Alice has recorded the total output for 21 days and found a sample variance of 25. Based on her observations, she wants to infer whether the popuation variance can be considered valid or not. She picks an arbitrary but reasonable confidence level to conclude her analysis. Click here to view page 1 of the table of critical values of the chi-squared distribution. Click here to view page 2 of the table of critical values of the chi-squared distribution. Alice calculates a x value which is equal to. Since it is V (critical value is chosen arbitrarily), she can argue that the population variance valid (Round to three decimal places including any zeros.) greater than x6.01 less than
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