Question 1

GPA and Class A college professor classifies his students according to their grade point average (GPA)and their class rank. GPA is on a 0.0-4.0 scale, and class rank is defined as the under class (freshmen and sophomores)and the upper class (juniors and seniors). One student is selected at random. 
    {GPA and Class Narrative} What is the probability that the student is in the upper class?

Accepted Answer

The answer of GPA and Class A college professor classifies...

Question 2

GPA and Class A college professor classifies his students according to their grade point average (GPA)and their class rank. GPA is on a 0.0-4.0 scale, and class rank is defined as the under class (freshmen and sophomores)and the upper class (juniors and seniors). One student is selected at random. 
    {GPA and Class Narrative} What is the probability that the student has GPA over 3.0?

Accepted Answer

The answer of GPA and Class A college professor classifies...

Question 3

Business Majors Suppose 30% of business majors major in accounting. You take a random sample of 3 business majors. {Business Majors Narrative} What is the chance that none of them major in accounting?

Accepted Answer

The answer of Business Majors Suppose 30% of business majors...

Question 4

Drunk Drivers Five hundred accidents that occurred on a Saturday night were analyzed. Two items noted were the number of vehicles involved and whether alcohol played a role in the accident. The numbers are shown below:  {Drunk Drivers Narrative} What proportion of accidents involved alcohol and single vehicle?

Accepted Answer

The answer of Drunk Drivers Five hundred accidents that occurred...

Question 5

Drunk Drivers Five hundred accidents that occurred on a Saturday night were analyzed. Two items noted were the number of vehicles involved and whether alcohol played a role in the accident. The numbers are shown below:  {Drunk Drivers Narrative} What proportion of accidents involved alcohol or a single vehicle?

Accepted Answer

The answer of Drunk Drivers Five hundred accidents that occurred...

Question 6

Drunk Drivers Five hundred accidents that occurred on a Saturday night were analyzed. Two items noted were the number of vehicles involved and whether alcohol played a role in the accident. The numbers are shown below:  {Drunk Drivers Narrative} What proportion of accidents involved more than one vehicle?

Accepted Answer

The answer of Drunk Drivers Five hundred accidents that occurred...

Question 7

Drunk Drivers Five hundred accidents that occurred on a Saturday night were analyzed. Two items noted were the number of vehicles involved and whether alcohol played a role in the accident. The numbers are shown below:  {Drunk Drivers Narrative} If alcohol was not involved, what proportion of the accidents were single vehicle?

Accepted Answer

The answer of Drunk Drivers Five hundred accidents that occurred...

Question 8

Business Majors Suppose 30% of business majors major in accounting. You take a random sample of 3 business majors. {Business Majors Narrative} What is the chance that they all major in accounting?

Accepted Answer

The answer of Business Majors Suppose 30% of business majors...

Question 9

GPA and Class A college professor classifies his students according to their grade point average (GPA)and their class rank. GPA is on a 0.0-4.0 scale, and class rank is defined as the under class (freshmen and sophomores)and the upper class (juniors and seniors). One student is selected at random. 
  {GPA and Class Narrative} If the GPA of the student selected is over 3.0, what is the probability that the student is in the lower class?

Accepted Answer

The answer of GPA and Class A college professor classifies...

Question 10

Suppose A and B are two independent events for which P ( A )= 0.20 and P ( B )= 0.60. 
 a. Find P ( A|B ). 
 b. Find P ( B|A ).

Accepted Answer

The answer of Suppose A and B are two independent...

Question 11

Club Members A survey of a club's members indicates that 50% own a home, 80% own a car, and 90% of the homeowners who subscribe also own a car. {Club Members Narrative} What is the probability that a club member owns neither a car nor a house?

Accepted Answer

The answer of Club Members A survey of a club's...

Question 12

Drunk Drivers Five hundred accidents that occurred on a Saturday night were analyzed. Two items noted were the number of vehicles involved and whether alcohol played a role in the accident. The numbers are shown below:  {Drunk Drivers Narrative} If alcohol was not involved, what proportion of the accidents were multiple vehicle?

Accepted Answer

The answer of Drunk Drivers Five hundred accidents that occurred...

Question 13

Drunk Drivers Five hundred accidents that occurred on a Saturday night were analyzed. Two items noted were the number of vehicles involved and whether alcohol played a role in the accident. The numbers are shown below:  {Drunk Drivers Narrative} If multiple vehicles were involved, what proportion of accidents involved alcohol?

Accepted Answer

The answer of Drunk Drivers Five hundred accidents that occurred...

Question 14

Club Members A survey of a club's members indicates that 50% own a home, 80% own a car, and 90% of the homeowners who subscribe also own a car. {Club Members Narrative} What is the probability that a subscriber owns both a car and a house?

Accepted Answer

The answer of Club Members A survey of a club's...

Question 15

Business Majors Suppose 30% of business majors major in accounting. You take a random sample of 3 business majors. {Business Majors Narrative} What is the chance that at least one majors in accounting?

Accepted Answer

The answer of Business Majors Suppose 30% of business majors...

Question 16

Drunk Drivers Five hundred accidents that occurred on a Saturday night were analyzed. Two items noted were the number of vehicles involved and whether alcohol played a role in the accident. The numbers are shown below:  {Drunk Drivers Narrative} If 3 vehicles were involved, what proportion of accidents involved alcohol?

Accepted Answer

The answer of Drunk Drivers Five hundred accidents that occurred...

Question 17

Business Majors Suppose 30% of business majors major in accounting. You take a random sample of 3 business majors. {Business Majors Narrative} What is the chance that exactly one majors in accounting?

Accepted Answer

The answer of Business Majors Suppose 30% of business majors...

Question 18

Club Members A survey of a club's members indicates that 50% own a home, 80% own a car, and 90% of the homeowners who subscribe also own a car. {Club Members Narrative} What is the probability that a club member owns a car or a house, or both?

Accepted Answer

The answer of Club Members A survey of a club's...

Question 19

Drunk Drivers Five hundred accidents that occurred on a Saturday night were analyzed. Two items noted were the number of vehicles involved and whether alcohol played a role in the accident. The numbers are shown below: 
    {Drunk Drivers Narrative} Given alcohol was involved, what proportion of accidents involved a single vehicle?

Accepted Answer

The answer of Drunk Drivers Five hundred accidents that occurred...

Question 20

GPA and Class A college professor classifies his students according to their grade point average (GPA)and their class rank. GPA is on a 0.0-4.0 scale, and class rank is defined as the under class (freshmen and sophomores)and the upper class (juniors and seniors). One student is selected at random. 
  {GPA and Class Narrative} If the student selected is in the upper class, what is the probability that her GPA is between 2.0 and 3.0?

Accepted Answer

The answer of GPA and Class A college professor classifies...

Quiz 5: Probability

Business Majors Suppose 30% of business majors major in accounting. You take a random sample of 3 business majors. {Business Majors Narrative} What is the chance that none of them major in accounting?

Business Majors Suppose 30% of business majors major in accounting. You take a random sample of 3 business majors. {Business Majors Narrative} What is the chance that they all major in accounting?

Suppose A and B are two independent events for which P ( A )= 0.20 and P ( B )= 0.60. a. Find P ( A|B ). b. Find P ( B|A ).

Club Members A survey of a club's members indicates that 50% own a home, 80% own a car, and 90% of the homeowners who subscribe also own a car. {Club Members Narrative} What is the probability that a club member owns neither a car nor a house?

Club Members A survey of a club's members indicates that 50% own a home, 80% own a car, and 90% of the homeowners who subscribe also own a car. {Club Members Narrative} What is the probability that a subscriber owns both a car and a house?

Business Majors Suppose 30% of business majors major in accounting. You take a random sample of 3 business majors. {Business Majors Narrative} What is the chance that at least one majors in accounting?

Business Majors Suppose 30% of business majors major in accounting. You take a random sample of 3 business majors. {Business Majors Narrative} What is the chance that exactly one majors in accounting?

Club Members A survey of a club's members indicates that 50% own a home, 80% own a car, and 90% of the homeowners who subscribe also own a car. {Club Members Narrative} What is the probability that a club member owns a car or a house, or both?