Answer:
Null hypothesis : top speed = height
Alternative hypothesis : top speed ≠ height
Dependent variable : speed
Independent variable : Height
Step-by-step explanation: The experiment aims to determine the relationship between the height of ramp and the top speed reached by her skateboard.
The Null hypothesis: top speed = height
while the alternative hypothesis will negate the Null.
Alternative hypothesis : top speed ≠ height
The dependent variable in the experiment will be her top speed, because it is the variable we want to evaluate. We want to determine if thwre will be a change in the top speed of the skateboard if there is change in another variable 'height' of ramp. The variable which might cause a change in value of our dependent variable is called the independent or predictor variable, which in this case is the height variable.
