Question

Consider a normal population with an unknown population standard deviation. A random sample results in  = 48.68 and s2 = 33.64.
a. Compute the 95% confidence interval for µ if  and s2 were obtained from a sample of 16 observations.
b. Compute the 95% confidence interval for µ if  and s2 were obtained from a sample of 25 observations.
c. Use your answers to discuss the impact of the sample size on the width of the interval.



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  • CreatedJanuary 28, 2015
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