Answer :

1. The variable being represented is the height of the students in a class. It is continuous since it has to be measured and not counted2. There are 9 + 5 = 14 students over 170cm tall3. There are thirty students in all4. The lowest class interval is 150cm ?155cm, so the minimum height possible is 150cm5. The highest class interval is 175cm ?180cm, so the maximum height possible in that group is 175cm.

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