挑战习题
1/5单选题
难度:

1.为了解中学300名男生的身高情况,随机抽取若干名男生进行身高测量,将所得数据整理后,画出频数分布直方图(如图). 估计该校男生的身高在169.5cm~174.5cm之间的人数有(  )
A 12
B 48
C 72
D 96
提示1:
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正确答案:Qw==
6Kej77ya5qC55o2u5Zu+5b2i77yM6Lqr6auY5ZyoMTY5LjVjbe+9njE3NC41Y23kuYvpl7TnmoTkurrmlbDnmoTnmb7liIbmr5TkuLrvvJo8YnI+PGltZyB3aWR0aD0xMDEgaGVpZ2h0PTQyIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvNEIvRTgvckJBQ0UxTjFqRm53S2lnUkFBQUNIWU5yLV9nMDc3LnBuZyI+w5cxMDAlPTI0Je+8jDxicj7miYDku6XvvIzor6XmoKHnlLfnlJ/nmoTouqvpq5jlnKgxNjkuNWNt772eMTc0LjVjbeS5i+mXtOeahOS6uuaVsOaciTMwMMOXMjQlPTcy77yI5Lq677yJLiA8YnI+5pWF6YCJQy4g