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In a random sample of eight cell phones, the mean full retail price was $450.00 and...
In a random sample of eight cell phones, the mean full retail price was $450.00 and the standard deviation was $208.00. Assume the population is normally distributed and use the t-distribution to find the margin of error and construct a 90% confidence interval for the population mean mu. Interpret the results.
Identify the margin of error.
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