Consider the following Exercise. Calculate the corresponding confidence interval and describe the relationship between the hypothesis test and the confidence interval for each problem. In a wood cutting process to produce rulers, the variance of ruler’s height is set to be equal 2 cm at all times. If the variance of ruler’s height is not equal to 2 cm, the process will stop immediately. The height for a sample of 10 rulers produces by the process is given as follows: 100.23, 100.11, 100.42, 99.66, 99.68, 100.14, 100.33, 100.10, 99.50, 100.21 Can we stop the process at 0.1 significance level?

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Consider the following Exercise. Calculate the corresponding confidence interval
and describe the relationship between the hypothesis test and the confidence
interval for each problem.

In a wood cutting process to produce rulers, the variance of ruler’s height
is set to be equal 2 cm at all times. If the variance of ruler’s height is not
equal to 2 cm, the process will stop immediately. The height for a sample
of 10 rulers produces by the process is given as follows:
100.23, 100.11, 100.42, 99.66, 99.68,
100.14, 100.33, 100.10, 99.50, 100.21
Can we stop the process at 0.1 significance level?

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