D. The experimental probability is closer to the theoretical probability for group H than group G.
With any experimental probability, the more trials that are done will make the experiment move more likely to be the theoretical probability. in this case, the theoretical probability for flipping a coin is 50 heads 50 tails which H is closer to. any statistical data the more data collected the more close to reality it is.
Speed (v) could be determined using this following formula
v = distance ÷ time
plug in the numbers
v =
v =
v = 9/3
v = 3
The speed is 3 miles per hour
The answer to the equation is x=4.5