The mean value of land and building per acre from a sample o

The mean value of land and building per acre from a sample of farms is $ 1600, with a standard deviation of $ 100. The date set has a bell-shaped distribution. Assume the number of farms in the sample is 72. Use the empirical rule to estimate the number of farms whose land and building values per acre are between $ 1500 and $ 1700

Solution

1600- 100 = 1500

1600 + 100 = 1700

P( miu -/+ sigma ) = 68.3%