FiltersDone

Question type

Essay

Multiple Choice

Short Answer

True False

Matching

Exam 3: Probability

Show Answer

Share

---

All types

Filters

Study Flashcards

Question 21

Multiple Choice

Review LaterAdd Note

Review Later

Provide an appropriate response. -A group of students were asked if they carry a credit card. The responses are listed in the table. $\begin{array} { l | c | c | c } { \text { Class } } & \begin{array} { c } \text { Credit Card } \\\text { Carrier }\end{array} & \begin{array} { c } \text { Not a Credit Card } \\\text { Carrier }\end{array} & \text { Total } \\\hline \text { Freshman } & 49 & 11 & 60 \\\text { Sophomore } & 12 & 28 & 40 \\\text { Total } & 61 & 39 & 100\end{array}$ If a student is selected at random, find the probability that he or she is a freshman given that the student owns a credit card. Round your answers to three decimal places.

A) 0.803
B) 0.817
C) 0.197
D) 0.490

Correct Answer

verified

Show Answer

Question 22

Short Answer

Review LaterAdd Note

Review Later

Write the word or phrase that best completes each statement or answers the question. -In the Venn diagram below, event A represents the adults who drink coffee, event B represents the adults who drink tea, and event C represents the adults who drink cola. List the region(s)which represent the adults who drink only cola.

Correct Answer

verified

Show Answer

Question 23

Essay

Review LaterAdd Note

Decide if the situation involves permutations, combinations, or neither. Explain your reasoning. -The number of five-letter passwords that can be created when letters can be repeated

Choose the one alternative that best completes the statement or answers the question. -The data in the table represent the number of consumer complaints against major U.S. airlines. If one complaint from the table is randomly selected, find the probability that it was not filed against Continental Airlines. (Round to three decimal places.) $\begin{array} { l | c } \text { Airline } & \text { Number of Complaints } \\\hline \text { United } & 287 \\\text { Northwest } & 256 \\\text { Continental } & 243\end{array}$

Choose the one alternative that best completes the statement or answers the question. -The distribution of blood types for 100 Americans is listed in the table. If one donor is selected at random, find the probability of selecting a person with blood type $\mathrm { A } +$ or $\text { A-. }$ $\begin{array} { l | c c c c c c c c } \text { Blood Type } & \text { O+ } & \text { O- } & \text { A+ } & \text { A- } & \text { B+ } & \text { B- } & \text { AB+ } & \text { AB- } \\\hline \text { Number } & 37 & 6 & 34 & 6 & 10 & 2 & 4 & 1\end{array}$

Choose the one alternative that best completes the statement or answers the question. -How many versions of a test are required to cover all possible question arrangements if there are seven open-ended questions on the test?

Choose the one alternative that best completes the statement or answers the question. -How many different permutations of the letters in the word STATISTICS are there?

Choose the one alternative that best completes the statement or answers the question. -The distribution of Master?s degrees conferred by a university is listed in the table. $\begin{array} { l | r } \text { Major } & \text { Frequency } \\\hline \text { Mathematics } & 216 \\\text { English } & 207 \\\text { Engineering } & 86 \\\text { Business } & 176 \\\text { Education } & 267\end{array}$ What is the probability that a randomly selected student graduating with a Master?s degree has a major of Education? Round your answer to three decimal places.

Write the word or phrase that best completes each statement or answers the question. -You are dealt two cards successively without replacement from a standard deck of 52 playing cards. Find the probability that the first card is a two and the second card is a ten. Round your answer to three decimal places.

Provide an appropriate response. -A group of students were asked if they carry a credit card. The responses are listed in the table. $\begin{array} { l | c | c | c } { \text { Class } } & \begin{array} { c } \text { Credit Card } \\\text { Carrier }\end{array} & \begin{array} { c } \text { Not a Credit Card } \\\text { Carrier }\end{array} & \text { Total } \\\hline \text { Freshman } & 40 & 20 & 60 \\\text { Sophomore } & 25 & 15 & 40 \\\text { Total } & 65 & 35 & 100\end{array}$ If a student is selected at random, find the probability that he or she owns a credit card given that the student is a freshman. Round your answer to three decimal places.

Provide an appropriate response. -A group of students were asked if they carry a credit card. The responses are listed in the table. $\begin{array} { l | c | c | c } { \text { Class } } & \begin{array} { c } \text { Credit Card } \\\text { Carrier }\end{array} & \begin{array} { c } \text { Not a Credit Card } \\\text { Carrier }\end{array} & \text { Total } \\\hline \text { Freshman } & 11 & 49 & 60 \\\text { Sophomore } & 6 & 34 & 40 \\\text { Total } & 17 & 83 & 100\end{array}$ If a student is selected at random, find the probability that he or she owns a credit card given that the student is a sophomore. Round your answer to three decimal places.

Choose the one alternative that best completes the statement or answers the question. -How many ways can five people, A, B, C, D, and E, sit in a row at a movie theater if A and B must sit together?

Provide an appropriate response. -Classify the events as dependent or independent. Events A and B where P(A) = 0.8, P(B) = 0.2, and P(A and B) = 0.16

Choose the one alternative that best completes the statement or answers the question. -In California, each automobile license plate consists of a single digit followed by three letters, followed by three digits. How many distinct license plates can be formed if there are no restrictions on the digits or letters?

Write the word or phrase that best completes each statement or answers the question. -The probability it will rain is 40% each day over a three-day period. What is the probability it will not rain at least one of the three days?

Choose the one alternative that best completes the statement or answers the question. -How many ways can five people, A, B, C, D, and E, sit in a row at a movie theater if C must sit to the right of but not necessarily next to B?

Choose the one alternative that best completes the statement or answers the question. -How many ways can a jury of four men and three women be selected from twelve men and ten women?

Write the word or phrase that best completes each statement or answers the question. -Find the probability of answering two true or false questions correctly if random guesses are made. Only one of the choices is correct.

Choose the one alternative that best completes the statement or answers the question. -Decide if the events A and B are mutually exclusive or not mutually exclusive. A date in Philadelphia is selected. A: It rains that day. B: It snows that day.

Choose the one alternative that best completes the statement or answers the question. -Decide if the events A and B are mutually exclusive or not mutually exclusive, A die is rolled. A: The result is a 3. B: The result is an odd number.