How large sample of bedroom apartments to find mean for rent

Reference no: EM13139197

You want to rent an unfurnished one-bedroom apartment next year. The mean monthly rent for a random sample of 10 apartments advertised in the local newspaper is $1400. Assume the standard deviation is $220.

How large a sample of one-bedroom apartments would be needed to estimate the mean within $20 with 90% confidence?

Reference no: EM13139197

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