Given

This is a one-tailed test.


Since the p-value of the sample statistic (0.00383) is less that the significant level (0.025), we reject the null hypothesis.
Answer:
y=2.25x
Where y is the distance walked and x is time.
Answer:
The median is marked at 161cm instead of 162cm.
The right part of the box (the upper quartile) is marked at 172cm, while the interquartile range is 17cm, so the upper quartile should be at 154cm + 17cm = 171cm.
Answer:
Domain is the values that x can take. In terms of real numbers x can take any value and the function will make sense. Since this is linear function the range is not limited too. So the range and domain coincide and are (-infinity;infinity)