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6.A second species of extra-terrestrial has a mean height of 71cm and a standard deviation of 5.3cm. An astrobiologist discovers that 30% of the extra-terrestrials
- 6.A second species of extra-terrestrial has a mean height of 71cm and a standard deviation of 5.3cm. An astrobiologist discovers that 30% of the extra-terrestrials bump their heads when they enter their spacecraft. What is the height of the door to the spacecraft?(6marks)
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