Question

1-If the records show that the probability of failing (with grade F) this course is p, [ use the answer of question 22 above as the probability, p, here], what is the probability that at most 2 students out of 16 fail this course? {Hint: use binomial distribution} (P=0.0625)

2-If the records show that the probability for a student to get a grade B this course is p, [ use the answer of question 19 above as the probability, p, here], what is the probability that exactly 4 students out of 16 will have a grade B for the course? {Hint: use binomial distribution} (p=0.1875)

3-What is the probability of selecting a grade A student for the first time either in 2nd or 3rd selection? {Hint: use geometric distribution with p value as the answer for question 18} (p=0.5625)

Answer #1

if records show that the probability of failing with a F is P(
probability of student receiving F). What is the probability that
at most 2 of 15 fail the course? if records show that the
probability to get a B is P( probability of student receiving B).
What is the probability that exactly 4 students of 15 will have a B
grade? if records show that the probability of selecting a grade A
student for the first time in...

Data set: 105, 82, 94.5, 72.5, 92, 91, 52, 86, 100, 96, 98, 109,
96, 96, 92
Suppose we have assigned grades for the 15 (student) scores in
our data.
The grade count is as follows:
A – 11 students
B – 2 students
C – 1 student
D – 0 students
F – 1 student
If a committee with 2 student members is to be formed, what is
the probability of forming a committee with one grade A and...

Records over the past year show that 1 out of 350 loans made by
Mammon Bank have defaulted. Find the probability that 2 or more out
of 290 loans will default. Hint: Is it appropriate to use the
Poisson approximation to the binomial distribution? (Round λ to 1
decimal place. Use 4 decimal places for your answer.)

Records over the past year show that 1 out of 380 loans made by
Mammon Bank have defaulted. Find the probability that 4 or more out
of 345 loans will default. Hint: Is it appropriate to use the
Poisson approximation to the binomial distribution? (Round λ to 1
decimal place. Use 4 decimal places for your answer.)

Consider a multiple-choice examination with 50 questions. Each
question has four possible answers. Assume that a student who has
done the homework and attended lectures has a 65% chance of
answering any question correctly. (Round your answers to two
decimal places.)
A student must answer 45 or more questions correctly to obtain a
grade of A. What percentage of the students who have done their
homework and attended lectures will obtain a grade of A on this
multiple-choice examination? Use...

Consider a multiple-choice examination with 50 questions. Each
question has four possible answers. Assume that a student who has
done the homework and attended lectures has a 65% chance of
answering any question correctly. (Round your answers to two
decimal places.)
(a)
A student must answer 43 or more questions correctly to obtain a
grade of A. What percentage of the students who have done their
homework and attended lectures will obtain a grade of A on this
multiple-choice examination?...

Consider a multiple-choice examination with 50 questions. Each
question has four possible answers. Assume that a student who has
done the homework and attended lectures has a 75% chance of
answering any question correctly. (Round your answers to two
decimal places.)
(a) A student must answer 43 or more questions correctly to
obtain a grade of A. What percentage of the students who have done
their homework and attended lectures will obtain a grade of A on
this multiple-choice examination?...

Consider a multiple-choice examination with 50 questions. Each
question has four possible answers. Assume that a student who has
done the homework and attended lectures has a 65% chance of
answering any question correctly. (Round your answers to two
decimal places.)
(a)
A student must answer 44 or more questions correctly to obtain a
grade of A. What percentage of the students who have done their
homework and attended lectures will obtain a grade of A on this
multiple-choice examination?...

1.) You are interested in predicting the final grade of students
in a business course. You collect data on the number of hours
studied and final grade for 8 students. Using the data provided
below, find the predicted linear regression equation. Do this long
hand on notebook paper. You must show all of
your calculations. Take calculations out to the 4th decimal place.
Do not round up or round down.
Your answers must clearly show your answers for bo, b1, and...

Consider a multiple-choice examination with 50
questions. Each question has four possible answers. Assume that a
student who has done the homework and attended lectures has a 65%
chance of answering any question correctly. (Round your answers to
two decimal places.)
(a)
A student must answer 43 or more questions correctly to
obtain a grade of A. What percentage of the students who have done
their homework and attended lectures will obtain a grade of A on
this multiple-choice examination?...

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