Question

1) The Medical Rehabilitation Education Foundation reports that the average cost of rehabilitation for stroke victims is $24,672. To see if the average cost of rehabilitation is different at a particular hospital, a researcher selects a random sample of 35 stroke victims at the hospital and finds that the average cost of their rehabilitation is $26,343. The standard deviation of the population is $3251. At α = 0.01, can it be concluded that the average cost of stroke rehabilitation at a particular hospital is greater than $24,672? Use the Critical Value Method. (9 Total Points) Hypothesis: Write the Null Hypothesis and the Alternative Hypothesis. Define your parameter in a statement. (1 point) Critical Value: Find the Critical Value and draw a picture. (1.5 points) Test Value: Find the Test Statistic. Write the correct formula, substitution, and then your answer. (1.5 points) Statement: Make an accurate statement based on the previous conclusions about the Null Hypothesis. (1 point) Conclusion: Draw an accurate conclusion about the alternative hypothesis. (1 point) Find an appropriate Confidence Interval to match the results of the Hypothesis Test. (1 Point) Make an appropriate statement in reference to the Confidence Interval with your results from part VI. (Hint: We are ___ % ...) (1 point) Describe how the confidence interval shows that we fail to reject or reject the null hypothesis similar to Part IV. (1 point)

          1) The Medical Rehabilitation Education Foundation reports that
the average cost of rehabilitation for stroke victims is $24,672.
To see if the average cost of rehabilitation is different at a
particular hospital, a researcher selects a random sample of 35
stroke victims at the hospital and finds that the average cost of
their rehabilitation is $26,343.  The standard deviation of
the population is $3251. At α = 0.01, can it be concluded that the
average cost of stroke rehabilitation at a particular hospital is
greater than $24,672? Use the Critical Value Method. (9 Total
Points)
Hypothesis: Write the Null Hypothesis and the Alternative
Hypothesis. Define your parameter in a statement. (1 point)
Critical Value: Find the Critical Value and draw a picture. (1.5
points)
Test Value: Find the Test Statistic. Write the correct formula,
substitution, and then your answer. (1.5 points)
Statement: Make an accurate statement based on the previous
conclusions about the Null Hypothesis. (1 point)
Conclusion: Draw an accurate conclusion about the alternative
hypothesis. (1 point)
Find an appropriate Confidence Interval to match the results of the
Hypothesis Test. (1 Point) 
Make an appropriate statement in reference to the Confidence
Interval with your results from part VI. (Hint: We are ___ % ...)
(1 point) 
Describe how the confidence interval shows that we fail to reject
or reject the null hypothesis similar to Part IV.  (1
point)

Added by Katie K.

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