3. The following data are the heights in centimeters of 200 female students in a certain college. Length 150 < X <155 155< X <160 160 < X <165 165≤ X <170 170 < X <175 175< X <180 Frequency 21 44 85 35 10 5 At 5% significance level, determine whether the height of female students is normally distributed.

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