In the year 2032, Daniella Portelada is a leading traveling nurse. Daniella is interested in reducing the mean recovery time for patients after experiencing a serious injury. Suppose the mean recovery time is presently 8.4 months. Daniella takes a random sample of 45 patients that have experienced serious injury to participate in a new treatment program and finds the sample mean is 7.9 months and a sample standard deviation of 1.2 months. Using α = 0.05, answer the following questions.
In the year 2032, Daniella Portelada is a leading traveling nurse. Daniella is interested in reducing the mean recovery time for patients after experiencing a serious injury. Suppose the mean recovery time is presently 8.4 months. Daniella takes a random sample of 45 patients that have experienced serious injury to participate in a new treatment program and finds the sample mean is 7.9 months and a sample standard deviation of 1.2 months. Using α = 0.05, answer the following questions.
a) What is the setup for your null and alternative hypothesis?
b) What is the value of the test statistic?
c) Using the appropriate level of confidence, what is the confidence interval?
d) What is the interpretation (not your conclusions) in the context of the problem of the confidence interval you obtained in part c?
e) What is the p value?
f) What is the interpretation (not your conclusions) of the p value in the context of the problem you found in part e?
g) What are your conclusions in the context of the problem? Relate your conclusions to the test statistic and critical value, confidence interval and p value.
What is the title of the classic science fiction novel by Frank Herbert that includes the line “Fear is the mind killer. It is the little death.”
- One Flew over the Cuckoo’s Nest
- The Grapes of Wrath
- Tom Sawyer and Huckleberry Finn
- Dune
- The Firm
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