11) The probability that a student got an B on a recent exam is 0.3. The...
11) The probability that a student got an B on a recent exam is 0.3. The probability that a student studied 10 hours or more is 0.4. The probability that a student studied 10 hours or more and got and B is 0.25. The probability that a student got a B given that they studied 10 hours or more is 0.625. Which of the below is true
A. Studying more than 10 hours and getting an B are mutually exclusive events
B. Studying more than 10 hours and getting an B are independent events
C. Studying more than 10 hours and getting an B are both mutually exclusive events and independent events
D. None of the above.
12) Pipelines have been built across N Dakota. The mean number of leaks for each mile is 0.2. (Assuming Poison Dist)
a) What is the probability that there will be no leaks in a randomly selected mile of pipeline?
b) What is the probability that there will be 3 or fewer leaks in a randomly selected 10 mile section of pipeline?
c)What is the probability that there is more than 1 leak in a randomly selected 5 mile stretch of pipeline?
Homework Answers
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11) The probability that a student got an B on
a recent exam is 0.3. The...
In parts (a) and (b), identify whether the events are mutually exclusive, independent, or neither (events...
In parts (a) and (b), identify whether the events are mutually exclusive, independent, or neither (events cannot be both mutually exclusive and independent). a) You and a randomly selected student from your class both earn A's in this course. neither independent mutually exclusive b) You and your class partner both earn A's in this course. neither mutually exclusive independent c) If two events can occur at the same time, they must be independent. false true
a , b , and c THANK YOU !!!!! How much do you study? A survey...
a , b , and c THANK YOU !!!!!
How much do you study? A survey among freshmen at a certain university revealed that the number of hours spent studying the week before final exams was normally distributed with mean 29 and standard deviation 9. Use the TI-84 PLUS calculator to answer the following. Round the answer to at least four decimal places. (a) What proportion of students studied more than 40 hours? (b) What is the probability that a...
The class registrations of 100 students are analyzed. It is found that 50 students study Applied...
The class registrations of 100 students are analyzed. It is found that 50 students study Applied Mechanics, 45 study Chemistry, and 15 studied both Applied Mechanics and Chemistry (a) If one of these students is selected at random, find the probability that 1. the student took applied mechanics or chemistry . ii. the student did not take either of these subjects 111. the student took chemistry but not applied mechanics (b) Are studying Applied Mechanics and studying Chemistry mutually exclusive...
4. The class registrations of 100 students are analyzed. It is found that 50 students study...
4. The class registrations of 100 students are analyzed. It is found that 50 students study Applied Mechanics, 45 study Chemistry, and 15 studied both Applied Mechanics and Chemistry (a) If one of these students is selected at random, find the probability that i. the student took applied mechanics or chemistry ii. the student did not take either of these subjects. iii. the student took chemistry but not applied mechanics (b) Are studying Applied Mechanics and studying Chemistry mutually exclusive...
042. A group of 20 students spend between 0 and 6 hours studying for an exam. How does the number of hours spend studying for the exam affect the probability that the student will pass the exam l...
042. A group of 20 students spend between 0 and 6 hours studying for an exam. How does the number of hours spend studying for the exam affect the probability that the student will pass the exam logistic regression model where the categorical variable pass (1pass, 0- fail) is dependent on the number of hours spent studying for the exam. What is the probability of passing the exam if the student studied for 3 and 5 hours' duration? a. 0.07...
Probability 4. A researcher was interested in the education background of trainees attending a management course....
Probability
4. A researcher was interested in the education background of trainees attending a management course. The (incomplete) data is shown in the contingency table Education Gender Bachelor degree 320 Do not have a bachelor Total Female Male Total xxX 65 210 XxX 135 600 a) If a male trainee is selected, what is the probability he has a bachelor degree? (2 marks) b) A trainee is randomly selected. What is the probability that a trainee is a female and...
5) A recent U.S survey shows that, the probability of living in California is 12%, the...
5) A recent U.S survey shows that, the probability of living in California is 12%, the probability of being Hispanic is 11% and the probability of being Hispanic and living in California is 4%. Let H represents the events of “Being Hispanic” and L for living in CA. Evaluate i) P(H/L), ii)P(H U L) 6) A single card is picked at random. Find the probability of picking a red card or a 10. 7) a)Define mutually vs not mutually exclusive...
13.If two events A and B are statistically independent, then: a. A's occurrence makes it less...
13.If two events A and B are statistically independent, then: a. A's occurrence makes it less likely that B will occur. b. A's occurrence makes it more likely that B will occur c. A's occurrence makes it impossible that B will occur d. A's occurrence has no effect on the probability of B occurring. e. B's occurrence has minimal effect on the probability of A occurring 14.If two events are independent, then: a. they must be mutually exclusive b. the...
How much do you study? A survey among freshmen at a certain university revealed that the...
How much do you study? A survey among freshmen at a certain university revealed that the number of hours spent studying the week before final exams was normally distributed with mean 26 and standard deviation 4. Use the TI-84 PLUS calculator to answer the following. Round the answer to at least four decimal places. (a) What proportion of students studied more than 38 hours? (b) What is the probability that a randomly selected student spent between 18 and 32 hours...
The class registrations of 100 students are analyzed. It is found that 50 students study Applied...
The class registrations of 100 students are analyzed. It is found that 50 students study Applied Mechanics, 45 study Chemistry, and 15 studied both Applied Mechanics and Chemistry. (a) If one of these students is selected at random, find the probability that i. the student took applied mechanics or chemistry. ii. the student did not take either of these subjects. iii. the student took chemistry but not applied mechanics. (b) Are studying Applied Mechanics and studying Chemistry mutually exclusive events?...
In parts (a) and (b), identify whether the events are mutually exclusive, independent, or neither (events cannot be both mutually exclusive and independent). a) You and a randomly selected student from your class both earn A's in this course. neither independent mutually exclusive b) You and your class partner both earn A's in this course. neither mutually exclusive independent c) If two events can occur at the same time, they must be independent. false true
a , b , and c THANK YOU !!!!!
How much do you study? A survey among freshmen at a certain university revealed that the number of hours spent studying the week before final exams was normally distributed with mean 29 and standard deviation 9. Use the TI-84 PLUS calculator to answer the following. Round the answer to at least four decimal places. (a) What proportion of students studied more than 40 hours? (b) What is the probability that a...
The class registrations of 100 students are analyzed. It is found that 50 students study Applied Mechanics, 45 study Chemistry, and 15 studied both Applied Mechanics and Chemistry (a) If one of these students is selected at random, find the probability that 1. the student took applied mechanics or chemistry . ii. the student did not take either of these subjects 111. the student took chemistry but not applied mechanics (b) Are studying Applied Mechanics and studying Chemistry mutually exclusive...
4. The class registrations of 100 students are analyzed. It is found that 50 students study Applied Mechanics, 45 study Chemistry, and 15 studied both Applied Mechanics and Chemistry (a) If one of these students is selected at random, find the probability that i. the student took applied mechanics or chemistry ii. the student did not take either of these subjects. iii. the student took chemistry but not applied mechanics (b) Are studying Applied Mechanics and studying Chemistry mutually exclusive...
042. A group of 20 students spend between 0 and 6 hours studying for an exam. How does the number of hours spend studying for the exam affect the probability that the student will pass the exam logistic regression model where the categorical variable pass (1pass, 0- fail) is dependent on the number of hours spent studying for the exam. What is the probability of passing the exam if the student studied for 3 and 5 hours' duration? a. 0.07...
Probability
4. A researcher was interested in the education background of trainees attending a management course. The (incomplete) data is shown in the contingency table Education Gender Bachelor degree 320 Do not have a bachelor Total Female Male Total xxX 65 210 XxX 135 600 a) If a male trainee is selected, what is the probability he has a bachelor degree? (2 marks) b) A trainee is randomly selected. What is the probability that a trainee is a female and...
13.If two events A and B are statistically independent, then: a. A's occurrence makes it less likely that B will occur. b. A's occurrence makes it more likely that B will occur c. A's occurrence makes it impossible that B will occur d. A's occurrence has no effect on the probability of B occurring. e. B's occurrence has minimal effect on the probability of A occurring 14.If two events are independent, then: a. they must be mutually exclusive b. the...
How much do you study? A survey among freshmen at a certain university revealed that the number of hours spent studying the week before final exams was normally distributed with mean 26 and standard deviation 4. Use the TI-84 PLUS calculator to answer the following. Round the answer to at least four decimal places. (a) What proportion of students studied more than 38 hours? (b) What is the probability that a randomly selected student spent between 18 and 32 hours...
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