peche \$m[1]:;-S 我怎麼覺得答案是D
D. Whether the farmers who have tried the modified seed planted as many acres of cotton, on average, as farmers using the ordinary seed did
我的思路如下~~
如果farmers did not plant as many modified seed per acre (假設100 modified seed per acre) as farmers using the ordinary seed did (假設只有10顆)
那兩組情況不同,根本無法比較-- 也無法證明這個argument是正確的~
仔細看D選項喔
它是說要看farmer是不是有種比較多acres of cotton喔
不說比較多seed per acre喔~~~ :)
而題目中比殺蟲劑用量已經是用per acre的用量來比了
所以種多少acre的cotton都沒差啦
:)