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A random sample of 31 waiting times? (in minutes) before patients saw a medical professional in a? hospital's minor emergency department had a variance of 1.69 minutes. After a new admissions procedure was? implemented, a random sample of 30 waiting times had a variance of 0.81 minute. At (alpha) α = 0.10?, can you support the? hospital's claim that the standard deviation of the waiting times has? decreased? Complete parts? (a) through? (e) below.
?(a) Identify the claim and state H0 and Ha. Let σ21 represent the initial variance and σ22 represent the variance for the new process.
?(b) Determine the critical value and the rejection region. What is the critical? F-value?. Round to two decimal places. What is the rejection region for this? F-test?
(c) Calculate the test statistic. Round to two decimal places
(d) Decide whether to reject or fail to reject the null hypothesis.
(e) Interpret the decision in the context of the claim. Can you support the? hospital's claim?
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