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 population’s 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 test’s decision. Does the decision support your department’s claim?...
View Full Document
- Fall '07
- Statistics, Crystal Jenkins, Crystal Jenkins STA