The mean value of land and buildings per acre from a sample of farms is 

$1700, with a standard deviation of $100. The data set has a bell-shaped distribution. Assume the number of farms in the sample is 75.

(b) If 30 additional farms were sampled, about how many of these additional farms would you expect to have land and building values between $1600 per acre and $1800 per acre?

_____ Farms out of 30 (Round to the nearest whole number as needed.)

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