Given the following information about a hypothesis test of the difference between two variances based on independent random samples,what is the critical value of the test statistic at a significance level of .05? Assume that the samples are obtained from normally distributed populations. 
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A medical doctor who specializes in diagnosing and treating mental health conditions, often through medication and psychotherapy.
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Physical activity that improves the efficiency of the cardiovascular system in absorbing and transporting oxygen.
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