Q4 A study was conducted by a certain firm to determine who curses at their computer. The results indicated that 66% of people age18-34 years have cursed at their computer. What are the odds against a randomly selected18- to34-year old having cursed at his or her computer.

Explanation Of Odds.

Odds are closely related toprobabilities, and used much more often than probabilities in gambling contexts. If the probability that an event occurs isp, the odds that the event occurs are p to 1p. This fact is also expressed by saying that the odds are p to 1p in favor of the event or that the odds are 1p to p against the event.Conversely, if the odds in favor of an event are a to b(or, equivalently, the odds against it are b toa), the probability the event occurs is aa+b.

Q7 Condition (%) Frequency

4-under 5 9

5-under 6 14

6-under 7 19

7-under 8 14

8-under 9 6

9-under 10 2

10-under 11 1

A=event that has a prevalence of at least8%

B=event that has a prevalence of less than7%

C=event that has a prevalence of at least5% but less than10%

D=event that has a prevalence of less than9%

* ONLY RESPOND PART B

a. Determine the number of outcomes(regions) that constitute the event (notC).

Event (notC) has

10 regions.

b. Determine the number of outcomes(regions) that constitute the event (A&B).

Event (A&B) has ( ? ) regions. * ONLY RESPOND PART B

Q10

Age (yr) No. of politicians

Under 50 10

50-59 27

60-69 36

70-79 15

80 and over 1

Express event S in terms of eventsA, B, and C.

Select the correct answer below.

a. Use the table and thef/N rule to findP(S).

b.Express event S in terms of eventsA, B, and C.

Select the correct answer below.

c. DetermineP(A), P(B), andP(C).

d. ComputeP(S), using the special addition rule and your answers from parts(b) and(c). Compare your answer with that in part(a).

Express event S in terms of eventsA, B, and C?

A.S=P(A)+P(B)+P(C)P(A and B)P(A and C)P(B andC)

B.S=(A and B andC)

C.S=P(A)+P(B)+P(C)

D. S=(A or B orC)