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Confidence interval for the population mean

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Reference no: EM132154434

In a random sample of twelve cell? phones, the mean full retail price was ?$458.50 and the standard deviation was ?$178.00. 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 μ. Interpret the results.

Identify the margin of error. ?(Round to one decimal place as? needed.)

Reference no: EM132154434

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