1.Approximate the sample standard deviation given the following frequency distribution

Class Frequency

0-4 17

5-9 16

10-14 9

15-19 18

20-24 17

2.The set of all possible outcomes of a probability experiment is:

a.the event

b.a Venn diagram

c.the sample space

d.probability

3.The type of probability that uses sample spaces to determine the probability is called:

a.classical

b.empirical

c.subjective

d.conditional