[填空题]
During the recent English Prepctwixzp2, 4s+;h gx;l8 on *ymie:t yxd(h8qfw gurmi+i vh ;wlhd)m1: : f-n,c;r League football season, the number of matches in which a certain number of goals were scorw t,-(rihlyc 1dx :hn)8 w+ihdg fufm;;::qvm ed were recorded in the table below. For example, there were 18 matches where 5 goals were scored.
The lower quartile for these results is 2 , and median is 3 .
1. Write down the value of the upper quartile for these results.
2. Draw a box-and-whisker diagram for these results.
3. Find the probability that, in a randomly chosen match, the number of goals will be less than the upper quartile. Give your answer correct to two decimal places. ≈
