Mathematics
Mathematics, 11.12.2019 05:31, MadisonUpky9652

The realtor and her clients do not know the average home sale price for all of guelph (500 was actually just a guess). however, they calculate that average sale price for their 15 listings is 400.
(a) given that the standard deviation of sale prices is known to be 80, calculate a 99 percent confidence interval for the average sale price in guelph.
(b) given that the standard deviation of sale prices is unknown but estimated to be 80, calculate a 99 percent confidence interval for the average sale price in guelph.

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The realtor and her clients do not know the average home sale price for all of guelph (500 was actua...

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