Question
In: Statistics and Probability
A physician with a practice is currently serving 280patients. The physician would like to administer a...
A physician with a practice is currently serving 280patients. The physician would like to administer a survey to his patients to measure their satisfaction level with his practice. A random sample of
23patients had an average satisfaction score of 7.7on a scale of 1-10. The sample standard deviation was 1.7.
Construct a 99% confidence interval to estimate the average satisfaction score for the physician's practice.
The 99% confidence interval to estimate the average satisfaction score is
(___,___)
Solutions
Expert Solution
We have given sample mean is 
and the sample standard deviation is s = 1.7. The size of the
sample is n = 23 and the required confidence level is 
.The critical t-value for 
and df = 22 degrees of freedom is 
.
The 99% confidence for the population mean μ is
computed using the following expression
The 99% confidence interval to estimate the average satisfaction score is
(6.701,8.669)
orchestra answered 2 years agoRelated Solutions
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