The weights of 69 randomly selected axles were found to have a variance of 2.46. construct the 99%confidence interval for the population variance of the weights of all axles in this factory. round your answers to two decimal places. answer(how to enter)2 points

(1.64,4.01)

Step-by-step explanation:

The confidence interval  for the population variance is given by :-

Given : n= 69 ;

Significance level :

Using Chi-square distribution table ,

   [by using chi-square distribution table]

Now, the 95% confidence interval for the standard deviation of the height of students at UH is given by :-

Hence, the  99% confidence interval for the population variance of the weights of all axles in this factory is (1.64,4.01).

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a mantle plume is an upwelling of abnormally hot rock within the earth's mantle. as the heads of mantle plumes can partly melt when they reach shallow depths, they are thought to be the cause of volcanic centers known as hotspots and probably also to have caused flood basalts.

step-by-step explanation: