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1. Costs are rising for all kinds of health care. The mean monthly rent at assisted-living...

1. Costs are rising for all kinds of health care. The mean monthly rent at assisted-living facilities was recently reported to have increased 13% over the last five years. A recent random sample of 116 observations reported a sample mean of $3433. Assume that past studies have informed us that the population standard deviation is $650. For this problem, round your answers to 2 digits after the decimal point. (a) What are the end points of a 90% confidence-interval estimate for the mean monthly rent in the population? [ , ] (b) What are the end points of a 95% confidence-interval estimate for the mean monthly rent in the population? [ , ] (c) What are the end points of a 99% confidence-interval estimate for the mean monthly rent in the population? [ , ]

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