Pg 486 - for patients (ages 17 and younger) diagnosed with...

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Crystal Jenkins STA 2023 TR 10:00am Putting It All Together pg 486 1. How Would You Do It? (a) What sampling technique would you use to select the sample for the study? Why? What sampling technique would you use if you divided hospital records according to four geographic regions (northeast, south, midwest, and west), randomly selected one region, and obtained records from each hospital in that region? (b) Which technique in part (a) would be easiest to implement? Why? (c) Identify possible flaws or biases in your study. 2. Choosing a Test To test the claim that there is a difference in the mean length of hospital stays
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Unformatted text preview: for patients (ages 17 and younger) diagnosed with pneumonia, should you use a ztest or a t-test? Are the samples independent or dependent? Do you need to know what each populations distribution is? Do you need to know anything about the population variances? 3. Testing a Mean Test the claim that there is a difference in the mean length of hospital stays for patients (ages 17 and younger) diagnosed with pneumonia.Assume the populations are normal and the population variances are not equal. Use = 0.05. Write a paragraph that interprets the tests decision. Does the decision support your departments claim?...
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This note was uploaded on 03/08/2012 for the course STA 2023 taught by Professor Bagwhandee during the Fall '07 term at University of Central Florida.

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