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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.

Math   Statistics-And-Probability   
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