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A random sample of size 81 has sample mean 20 and sample standard deviation 3. a) Is it appropriate to use a Student's t distribution
A random sample of size 81 has sample mean 20 and sample standard deviation 3. a) Is it appropriate to use a Student's t distribution to compute a confidence interval for the population mean ? Explain. _____________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ b) Find a 95% confidence interval for c) Explain the meaning of the confidence interval you computed
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Probability With Applications and R
Authors: Robert P. Dobrow
1st edition
1118241257, 1118241258, 978-1118241257
