【OG20-P286-382题】Last year, in a certain housing development, the average (arithmetic mean) price of 20 new houses was $160,000. Did more than 9 of the 20 houses have prices that were less than the average price last year?(1)Last year the greatest price of one of the 20 houses was $219,000.(2)Last year the median of the prices of the 20 houses was 150,000