Question

The students in one college have the following rating system for their professors: excellent, good, fair, and bad. In a recent poll of the students, it was found that they believe that 20% of the professors are excellent, 50% are good, 20% are fair, and 10% are bad. Assume that 12 professors are randomly selected from the college. What is the probability that 4 are excellent and 3 are good?

A. 0.0111

B. 0.0135

C. 0.0213

D. 0.0222

Answer #1

According to a recent survey, 20% of college students purchase
their lunch in the cafeteria. Assume 5 students are randomly
selected. Use the binomial table in the text to answer the
following questions.
a. What is the probability that all 5 eat in the cafeteria?
b. What is the probability that at least 3 eats in the
cafeteria?
c. What is the probability that not more than 4 eat in the
cafeteria?
d. What is the probability that exactly 1...

An academic conference held this past January consistent of 250
participants including undergraduate students, masters students,
PhD students, and, professors from business faculties, engineering
faculties, and nursing faculties to discuss various ways of
increasing the learning desires of students. The
following table gives us the breakdown of participants by levels of
education and faculties.
Business Engineering Nursing Totals
Undergraduate
students 30 15 35 80
Masters
students 40 38 12 90
PhD
students 10 12 8 30
Professors
20 15 15 50
Totals 100 80 70 250
If one of these participants is randomly selected,
complete the following statements by filling in the spaces...

The following data represents the exam scores of students in
Econ 220 VV22, which is one of several sections of Econ 220 in a
college. You can take this as a sample.
Student
Score
1
82
2
70
3
50
4
60
5
75
6
65
7
55
8
80
9
85
10
90
11
95
12
94
13
35
14
40
15
65
16
95
17
91
18
55
19
65
20
76
21
86
22
96...

Assignment 2
1. Assume that you have two biased coins and one fair coin. One
of the biased coins are two tailed and the second biased one comes
tails 25 percent of the time. A coin is selected randomly and
flipped. What is the probability that the flipped coin will come up
tail?
2. One white ball, one black ball, and two yellow balls are
placed in a bucket. Two balls are drawn simultaneously from the
bucket. You are given...

Answer the following questions and use
Excel to show your work.
50 students in two sections of a college Physics 101 course
recently took a mid-term exam. 13 students earned an A, 10 students
earned a B, 8 students earned a C, 9 students earned a D, and 10
students earned an F on the exam. The students were queried
regarding the number of hours they had devoted to studying for the
exam. 12 of the students who earned an...

7.1 Regional College increased their admission standards so that
they only admit students who have scored in the 80th percentile or
higher (top 20%) of all scores on the SAT. What SAT cutoff will the
school use this year? (Recall that for the SAT μ = 500, σ = 100,
and the scores are normally distributed)
7.2 Even with the increase in standards, the Registrar at
Regional College notices that people who don’t meet the minimum
continue to apply for...

Solve the following questions with proper answer
1. At a college a popular achievement test is used for advanced
college placement. Counselors selected a random sample of 16
students from the college and scored their tests by hand before
sending them in for computer processing. For this sample, the mean
was 520 and s = 20. Construct a 95% confidence interval for the
mean. Circle the correct answer
(A) (509.4, 530.6)
(B) (508.8, 531.2)
(C) (510.1, 530.0)
(D) (509.6, 530.4)...

1- In a study done by Statistics Weekly, they found that 12% of
people believe that there will eventually be a zombie apocalypse.
Suppose we have a random sample of 500, would it be unusual to find
43 people who believe that there will eventually be a zombie
apocalypse. Would it be unusual to find 70 people who believe that
there will eventually be a zombie apocalypse?
2-The age at the time of marriage was obtained for a random
sample...

1. A random number generator is used to select a number from 1
to
500 ?(inclusively).
What is the probability of selecting the number 595
?
What is the probability?
2.Identify the sample space of the probability experiment and
determine the number of outcomes in the sample space.
-Randomly choosing an even number between 10 and 20,
inclusive
The sample space is?
(Use a comma to separate answers)
There are _____ outcomes in the sample space
3. Determine the number...

Q) Over the past few years the percentage of students who leave
Lakeland College at the end of the first year has increased. Last
year Lakeland started a voluntary one-week orientation program to
help first-year students adjust to campus life. If Lakeland is able
to show that the orientation program has a positive effect on
retention, they will consider making the program a requirement for
all first-year students. Lakeland’s administration also suspects
that students with lower GPAs have a higher...

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