Medical Operations The director of a medical hospital feels that her surgeons perform more operations per year than the national average of 211. She selected a random sample of 15 surgeons and found that the mean number of operations they performed was 212.8. The standard deviation of the sample was 3.8. Is there enough evidence to support the director's feelings at a = 0.10? Assume that the population is approximately normally distributed. Use the critical value method and tables. compute the test- using the the z- test find the p value make a decision
Medical Operations The director of a medical hospital feels that her surgeons perform more operations per year than the national average of 211. She selected a random sample of 15 surgeons and found that the mean number of operations they performed was 212.8. The standard deviation of the sample was 3.8. Is there enough evidence to support the director's feelings at a = 0.10? Assume that the population is approximately normally distributed. Use the critical value method and tables. compute the test- using the the z- test find the p value make a decision
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section: Chapter Questions
Problem 22SGR
Question
Medical Operations The director of a medical hospital feels that her surgeons perform more operations per year than the national average of 211. She selected a random sample of 15 surgeons and found that the mean number of operations they performed was 212.8. The standard deviation of the sample was 3.8. Is
there enough evidence to support the director's feelings at a = 0.10? Assume that the population is approximately normally distributed. Use the critical value
method and tables.
compute the test- using the the z- test
find the p value
make a decision
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