Answer:
a) Experimental probability = 0.4
a) Theoretical probability = 0.5
Step-by-step explanation:
Probability is the ratio of number of favorable outcome to total number of out comes.
Part a:
The experimental probability of the coin landing heads up
Total number of outcomes = 40
Number of favorable outcome = 16
Experimental probability 
Part b:
The theoretical probability of the coin landing heads up
A coin has two sides head and tail,so probability of landing heads up is 0.5.