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In a random sample of twelve cellphones, the mean full retail price was $ 458.50 and the standard deviation was $ 178.00. Assume the population

In a random sample of twelve cellphones, the mean full retail price was $458.50 and the standard deviation was $178.00. Assume the population is normally distributed and use thet-distribution to find the margin of error and construct a 90% confidence interval for the population mean . Interpret the results.

Identify the margin of error.

(Round to one decimal place asneeded.)

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