Jonas is conducting an experiment using a 10-sided die. he determines that the theoretical probability of rolling a 3 is mc015-1.jpg. he rolls the die 20 times. four of those rolls result in a 3. which adjustment can jonas make to his experiment so the theoretical and experimental probabilities are likely to be closer?

The link doesn't work, but I imagine he would have figured that there is a 1/10 chance of a 3 being rolled, assuming there are ten different numbers on the die.

Since he rolled the die 20 times, and 4 of those rolls were 3's, the experimental probability of him rolling a 3 are 1/5. 

What I think he should do is: try the experiment 3 times, then gather the data of the experiments, and make his prediction.

The shelves will hold 270 books in total

Ican’t sorry i would if i could