O Partial Lab Solutions-uF ·o Save Bees-pollinator de × \\ e chegg Study l Guide
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O Partial Lab Solutions-uF ·o Save Bees-pollinator de × e chegg Study l Guided S: × / D Lab 10.pdf C file:///C/Usersjohnw/Downloads/Lab%2010.pdf STAT201 Fall 2017 Lab 10 Instructions: Name: Show all your work. Box or circle your final Lab is due at the end of the recitation period answer when applicable Lab Section/TA name Score (16 pts): 1. 3 pts Consider the hypothesis test: Ho : = 47 A sample of size 18 has a mean of 45 and a standard deviation of 3.5. Compute the test statistic (Step 3) and the pvalue (Step 4) for this test 2. A healthcare researcher is interested in the average cost of single knee replacement surgery. The researcher suspects that sample data would provide evidence that the average cost of knee replacement surgery is more than $40.000. The researcher collects data from a sample of n = 15 knee replacements. The data (cost of surgery, in thousands of dollars) and summary statistics are given below: Type here to search 117/2017Explanation / Answer
1.
n = 18
mean = 45
stdv = 3.5
t-stat = (X-mu)/(stdev/(sqrt(18))) = (45-47)/(3.5/sqrt(18))= -2.42
The P-Value is .02701.
The result is significant at p < .05.
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