Of the last three chapter tests given in a computer programming
class, 11 students passed all...
Of the last three chapter tests given in a computer programming
class, 11 students passed all three tests, 9 students passed two
tests, and 2 students passed one test. If a single student is
picked at random, what is the probability that the student passed
all three tests or passed one test? Provide the final answer as a
fraction. A= 13/22
4.) The student council is hosting a drawing to raise money for
scholarships. They are selling...
4.) The student council is hosting a drawing to raise money for
scholarships. They are selling tickets for $10 each and will sell
800 tickets. There is one $3,000 grand prize, three $400 second
prizes, and thirteen $30 third prizes. You just bought a ticket.
Find the expected value for your profit. Round to the nearest
cent.
5.)61% of all students at a college still need to take another
math class. If 50 students are randomly selected, find the
probability...
In the senior year of a high school graduating class of 100
students, 42 studied mathematics,...
In the senior year of a high school graduating class of 100
students, 42 studied mathematics, 68 studied psychology, 54 studied
history, 22 studied both mathematics and history, 25 studied both
mathematics and psychology, 7 studied history but neither
mathematics nor psychology, 10 studied all three subjects, and 8
did not take any of the three. If a student who studied mathematics
is selected, what is the probability that the student has also
studied psychology?
Consider the magic matrix:
A = np.array([[17, 24, 1, 8, 15],
[23,
5, 7, 14, 16],...
Consider the magic matrix:
A = np.array([[17, 24, 1, 8, 15],
[23,
5, 7, 14, 16],
[
4, 6, 13, 20, 22],
[10,
12, 19, 21, 3],
[11,
18, 25, 2, 9]])
The matrix A has 5 row sums (one for each row), 5 column
sums (one for each column) and two diagonal sums. These 12 sums
should all be exactly the same. Verify that they are the same by
printing them and “seeing” that they are the same.
A class contains 30 students.
1) The teacher asks three questions during a class, which any...
A class contains 30 students.
1) The teacher asks three questions during a class, which any
student can answer. How many unique outcomes?
2) The class is divided into 6 teams of 5 students each,
numbered team #1 thru #6. Each team is to make a presentation. How
many different ways can the team presentations be sequenced?
3) A team of 8 students is to be selected from the class. In how
many unique ways can this team be selected?...
Q10. A student wishes to
take
an English Course (offered at 8, 10,
11 and 12),...
Q10. A student wishes to
take
an English Course (offered at 8, 10,
11 and 12),
a Math Course (offered at 9, 10, 12
and 1) and
a Comp Sci Course (offered at 9, 11,
12 and 1)
How many different schedules are possible so that they make take
all three courses?
Richard has just been given a 8-question multiple-choice quiz in
his history class. Each question has...
Richard has just been given a 8-question multiple-choice quiz in
his history class. Each question has four answers, of which only
one is correct. Since Richard has not attended class recently, he
doesn't know any of the answers. Assuming that Richard guesses on
all eight questions, find the indicated probabilities. (Round your
answers to three decimal places.)
(a) What is the probability that he will answer all questions
correctly?
(b) What is the probability that he will answer all questions...