Question
A survey of 36 randomly selected iPhone owners showed that the purchase price has a mean of $650 with a sample standard deviation of $24.
A survey of 36 randomly selected iPhone owners showed that the purchase price has a mean of $650 with a sample standard deviation of $24.
a.What is the point estimate of the population mean?
b.What is the point estimate of the population standard deviation?
c.What is the standard error of the sample mean?
d.Compute the 95% confidence interval to estimate the population mean.(Round your answers to 3 decimal places.)
e.How many users need to be sampled to estimate the population mean price with 95% confidence and a $10 margin of error?
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Recent Developments Of Mathematical Fluid Mechanics
Authors: Herbert Amann, Yoshikazu Giga, Hideo Kozono, Hisashi Okamoto, Masao Yamazaki
1st Edition
3034809395, 9783034809399
