## [answered] A random sample of 21 waiting times (in minutes) before pat

?A random sample of 21 waiting times?(in minutes) before patients saw a medical professional in a?hospital's minor emergency department had a variance of 1.96?minutes. After a new admissions procedure was?implemented, a random sample of 27 waiting times had a variance of 0.64 minute.
At ?=0.01 can you support the?hospital's claim that the standard deviation of the waiting times has?decreased?

Identify the claim and state?H0 and Ha. Let??^2/1?represent the initial variance and ?^2/2
represent the variance for the new process.

Determine the critical value and the rejection region. What is the critical?F-value?

What is the rejection region for this?F-test?

Calculate the test statistic

Decide whether to reject or fail to reject the null hypothesis.

Interpret the decision in the context of the claim. Can you support the?

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This question was answered on: Sep 18, 2020

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