1. To get certified in a certain course we need to attempt three tests. No matter which order we follow while attempting these tests.
2. How many permutations are possible?
3. How many combinations are possible?

2. In a MATH1014 class of 56 students, 30% students invest through Wealthsimple. Out of 9 randomly selected students: what is the probability:

a. Find the probability that exactly two students use Wealthsimple.

b. Find the probability that exactly four of these student sample have utilized Wealthsimple.

c. What is the probability that Wealthsimple is not used by any of these students?

3. A sample of the rental rates at the Street Park apartments approximates a symmetrical, bell-shaped distribution. The sample mean is $600; the standard deviation is $24. Using the Empirical Rule, answer these questions:

1. About 68 percent of the rental rates are between what two amounts?
2. About 95 percent of the rental rates are between what two amounts?
3. Almost all of the rental rates are between what two amounts?