Question 1

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 major...

Question 2

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 major...

Question 3

The ____________________ of two events A and B is the event that occurs when either A or B or both occur.

Accepted Answer

The answer of The ____________________ of two events A and...

Question 4

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 members...

Question 5

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 major...

Question 6

Cars
Suppose X = the number of cars owned by a family in the U.S.The probability distribution of X is shown in the table below.
 $\begin{array}{|l|c|c|c|c|}
\hline X & 0 & 1 & 2 & 3 \
\hline \text { Probability } & 0.56 & 0.23 & 0.12 & 0.09 \
\hline
\end{array}$ 
-The ____________________ of events A and B is the event that occurs when both A and B occur.

Accepted Answer

The answer of Cars
Suppose X = the number of cars...

Question 7

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 members...

Question 8

If A and B are independent,then P(A|B)= ____________________.

Accepted Answer

The answer of If A and B are independent,then P(A|B)=...

Question 9

Cars
Suppose X = the number of cars owned by a family in the U.S.The probability distribution of X is shown in the table below.
 $\begin{array}{|l|c|c|c|c|}
\hline X & 0 & 1 & 2 & 3 \
\hline \text { Probability } & 0.56 & 0.23 & 0.12 & 0.09 \
\hline
\end{array}$ 
-The probability of an intersection of two events is called a(n)____________________ probability.

Accepted Answer

The answer of Cars
Suppose X = the number of cars...

Question 10

Suppose two events A and B are related.The ____________________ probability of A is the probability that A occurs,regardless of whether event B occurred or not.

Accepted Answer

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

Question 11

If A and B are mutually exclusive,their joint probability is ____________________.

Accepted Answer

The answer of If A and B are mutually exclusive,their...

Question 12

Drunk Drivers
Six 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:
 $$\begin{array}{l}
\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\text { Number of Vehieles Involved }\
\begin{array} { | l | c c c | c | } 
\hline \text { Did aloholplay a role? } & 1 & 2 & 3 & \text { Totals } \
\hline \text { Yes } & 75 & 125 & 50 & 250 \
\text { Na } & 50 & 225 & 75 & 350 \
\hline \text { Totals } & 125 & 350 & 125 & 600 \
\hline
\end{array}
\end{array}$$
-{Drunk Drivers Narrative} What proportion of accidents involved more than one vehicle?

Accepted Answer

The answer of Drunk Drivers
Six hundred accidents that occurred on...

Question 13

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 members...

Question 14

Tea and Seltzer
Suppose 55 percent of adults drink tea,45 percent drink seltzer,and 10 percent drink both.
-{Tea and Seltzer Narrative} What is the probability that a randomly chosen adult doesn't drink tea or seltzer?

Accepted Answer

The answer of Tea and Seltzer
Suppose 55 percent of adults...

Question 15

A conditional probability of A given B is written in probability notation as ____________________.

Accepted Answer

The answer of A conditional probability of A given B...

Question 16

If P(A|B)= P(A)then events A and B are ____________________.

Accepted Answer

The answer of If P(A|B)= P(A)then events A and B...

Question 17

Tea and Seltzer
Suppose 55 percent of adults drink tea,45 percent drink seltzer,and 10 percent drink both.
-{Tea and Seltzer Narrative} What is the probability that a randomly chosen adult drinks seltzer or tea or both?

Accepted Answer

The answer of Tea and Seltzer
Suppose 55 percent of adults...

Question 18

If two events are mutually exclusive,their joint probability is ____________________.

Accepted Answer

The answer of If two events are mutually exclusive,their joint...

Question 19

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 major...

Question 20

Tea and Seltzer
Suppose 55 percent of adults drink tea,45 percent drink seltzer,and 10 percent drink both.
-{Tea and Seltzer Narrative} What is the probability that a randomly chosen adult does not drink seltzer?

Accepted Answer

The answer of Tea and Seltzer
Suppose 55 percent of adults...

Quiz 6: 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 exactly 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 they all major in accounting?

The ____________________ of two events A and B is the event that occurs when either A or B or both occur.

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 none of them major 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?

If A and B are independent,then P(A|B)= ____________________.

Suppose two events A and B are related.The ____________________ probability of A is the probability that A occurs,regardless of whether event B occurred or not.

If A and B are mutually exclusive,their joint probability is ____________________.

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?

Tea and Seltzer Suppose 55 percent of adults drink tea,45 percent drink seltzer,and 10 percent drink both. -{Tea and Seltzer Narrative} What is the probability that a randomly chosen adult doesn't drink tea or seltzer?

A conditional probability of A given B is written in probability notation as ____________________.

If P(A|B)= P(A)then events A and B are ____________________.

Tea and Seltzer Suppose 55 percent of adults drink tea,45 percent drink seltzer,and 10 percent drink both. -{Tea and Seltzer Narrative} What is the probability that a randomly chosen adult drinks seltzer or tea or both?

If two events are mutually exclusive,their joint probability is ____________________.

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?

Tea and Seltzer Suppose 55 percent of adults drink tea,45 percent drink seltzer,and 10 percent drink both. -{Tea and Seltzer Narrative} What is the probability that a randomly chosen adult does not drink seltzer?