Use the following to answer questions :
A random sample of 20 elements selected from a population produced a variance equal to 11.072.Assume that the population is normally distributed.
-Based on this sample,the 90% confidence interval for the population standard deviation,rounded to three decimal places,is:
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Q81: Using the table for the chi-square distributions,find
Q83: Use the following to answer questions :
A
Q84: Find the probability of Q85: Use the following to answer questions : Q87: Use the following to answer questions :
A
A
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