# Stats

You want to rent an unfurnished one-bedroom apartment in Boston next year. The mean monthly rent for a random sample of 14 apartments advertised in the local newspaper is \$1200. Assume that the standard deviation is \$230. Find a 95% confidence interval for the mean monthly rent for unfurnished one-bedroom apartments available for rent in this community. (Round your answers to two decimal places.)

I did the work and got (\$ 1079.48, \$ 1320.50 ) but it says that this answer is wrong.

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1. CI95 = mean ± 1.96 (sd/√n)

CI95 = 1200 ± 1.96 (230/√14)

Calculating...

1200 + 120.48 = 1320.48
1200 - 120.48 = 1079.52

I found approximately the same answer you did.

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2. Thank you!

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2. 👎

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