The meaning of quartile is a range of weights of 25% of the population.
The meaning of median is the value of weight separating the 50% lower weights from the 50% higher weights
Thus 0-25% have weights < 150, next 25% (25%-50%) have 150< weights <155, 50%-75% have 155<weights<162 and the last 25% have 162 < weights
so answers 1, 4, 5, and 6 are correct
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