Final answer:
To find the experimental probability of receiving a 50% coupon after rolling a number cube 20 times, you count how often the outcome representing a 50% coupon occurs and divide it by the total rolls. If '3' represents a 50% coupon and appears 4 times, the probability is 4/20 or 0.20.
Step-by-step explanation:
The question asks about finding the experimental probability of receiving a 50% coupon when rolling a number cube, also known as a six-sided die, 20 times. To find this probability, you would first need to define what outcome on the die represents a 50% coupon. For this example, let's assume that rolling a '3' represents a 50% coupon. After rolling the die 20 times, you would count the number of times the number '3' appeared, which is known as the observed frequency. If, for example, '3' was rolled 4 times out of the total 20 rolls, then the experimental probability is calculated as the observed frequency divided by the total number of rolls. So, in this case, 4/20 = 0.20, which means the experimental probability of rolling a '3' (or receiving a 50% coupon) is 0.20.