This visual representation shows the sets of real numbers. Which statement is true regarding the number sets? 1. Some irrational numbers are also rational numbers. 2. All irrational numbers are also rational numbers. 3. All rational numbers are also irrational numbers. 4. Rational numbers and irrational numbers have no numbers in common.

Arestaurant gives out a scratch-off card to every customer. the probability that a customer will win a prize from a scratch-off card is 25%. design and conduct a simulation using random numbers to find the experimental probability that a customer will need more than 3 cards in order to win a prize. justify the model for your simulation, and conduct at least 10 trials.

15 and 14.7 are 1 apart, so 15 – 14.7 must be 1.

Using pert, adam munson was able to determine that the expected project completion time for the construction of a pleasure yacht is 21 months, and the project variance is 4. a) what is the probability that the project will be completed in 17 months? b) what is the probability that the project will be completed in 20 months? c) what is the probability that the project will be completed in 23 months? d) what is the probability that the project will be completed in 25 months? e) what is the due date that yields a 95% chance of completion?