-
Home
- Collaborative statistics homework
- Discrete random variables
- Homework (modified r. bloom)
For each problem:
-
A
In words, define the Random Variable
.
-
B
List the values hat
may take on.
-
C
Give the distribution of
.
~
Then, answer the questions specific to each individual problem.
Six different colored dice are rolled. Of interest is the number of dice that show a “1.”
-
D
On average, how many dice would you expect to show a “1”?
-
E
Find the probability that all six dice show a “1.”
-
F
Is it more likely that 3 or that 4 dice will show a “1”? Use numbers to justify your answer numerically.
-
A
= the number of dice that show a 1
-
B
0,1,2,3,4,5,6
-
C
~
-
D
1
-
E
0.00002
-
F
3 dice
According to a 2003 publication by Waits and Lewis
(source:
http://nces.ed.gov/pubs2003/2003017.pdf
), by the end of 2002, 92% of U.S. public two-year colleges offered distance learning courses. Suppose you randomly pick 13 U.S. public two-year colleges. We are interested in the number that offer distance learning courses.
-
D
On average, how many schools would you expect to offer such courses?
-
E
Find the probability that at most 6 offer such courses.
-
F
Is it more likely that 0 or that 13 will offer such courses? Use numbers to justify your answer numerically and answer in a complete sentence.
A school newspaper reporter decides to randomly survey 12 students to see if they will attend Tet festivities this year. Based on past years, she knows that 18% of students attend Tet festivities. We are interested in the number of students who will attend the festivities.
-
D
How many of the 12 students do we expect to attend the festivities?
-
E
Find the probability that at most 4 students will attend.
-
F
Find the probability that more than 2 students will attend.
-
A
= the number of students that will attend Tet.
-
B
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12
-
C
~
-
D
2.16
-
E
0.9511
-
F
0.3702
Suppose that about 85% of graduating students attend their graduation. A group of 22 graduating students is randomly chosen.
-
D
How many are expected to attend their graduation?
-
E
Find the probability that 17 or 18 attend.
-
F
Based on numerical values, would you be surprised if all 22 attended graduation? Justify your answer numerically.
At The Fencing Center, 60% of the fencers use the foil as their main weapon. We randomly survey 25 fencers at The Fencing Center. We are interested in the numbers that do
not use the foil as their main weapon.
-
D
How many are expected to
not use the foil as their main weapon?
-
E
Find the probability that six do
not use the foil as their main weapon.
-
F
Based on numerical values, would you be surprised if all 25 did
not use foil as their main weapon? Justify your answer numerically.
-
A
= the number of fencers that do
not use foil as their main weapon
-
B
0, 1, 2, 3,... 25
-
C
~
-
D
10
-
E
0.0442
-
F
Yes
Approximately 8% of students at a local high school participate in after-school sports all four years of high school. A group of 60 seniors is randomly chosen. Of interest is the number that participated in after-school sports all four years of high school.
-
D
How many seniors are expected to have participated in after-school sports all four years of high school?
-
E
Based on numerical values, would you be surprised if none of the seniors participated in after-school sports all four years of high school? Justify your answer numerically.
-
F
Based upon numerical values, is it more likely that 4 or that 5 of the seniors participated in after-school sports all four years of high school? Justify your answer numerically.
Questions & Answers
what is defense mechanism
what is defense mechanisms
Chinaza
I'm interested in biological psychology and cognitive psychology
what does preconceived mean
How can I develope my cognitive domain
why is communication effective
Communication is effective because it allows individuals to share ideas, thoughts, and information with others.
effective communication can lead to improved outcomes in various settings, including personal relationships, business environments, and educational settings. By communicating effectively, individuals can negotiate effectively, solve problems collaboratively, and work towards common goals.
it starts up serve and return practice/assessments.it helps find voice talking therapy also assessments through relaxed conversation.
miss
Every time someone flushes a toilet in the apartment building, the person begins to jumb back automatically after hearing the flush, before the water temperature changes. Identify the types of learning, if it is classical conditioning identify the NS, UCS, CS and CR. If it is operant conditioning, identify the type of consequence positive reinforcement, negative reinforcement or punishment
please i need answer
Wekolamo
because it helps many people around the world to understand how to interact with other people and understand them well, for example at work (job).
Agreed 👍 There are many parts of our brains and behaviors, we really need to get to know. Blessings for everyone and happy Sunday!
ARC
A child is a member of community not society elucidate ?
Isn't practices worldwide, be it psychology, be it science. isn't much just a false belief of control over something the mind cannot truly comprehend?
compare and contrast skinner's perspective on personality development on freud
Skinner skipped the whole unconscious phenomenon and rather emphasized on classical conditioning
war
explain how nature and nurture affect the development and later the productivity of an individual.
nature is an hereditary factor while nurture is an environmental factor which constitute an individual personality. so if an individual's parent has a deviant behavior and was also brought up in an deviant environment, observation of the behavior and the inborn trait we make the individual deviant.
Samuel
I am taking this course because I am hoping that I could somehow learn more about my chosen field of interest and due to the fact that being a PsyD really ignites my passion as an individual the more I hope to learn about developing and literally explore the complexity of my critical thinking skills
and having a good philosophy of the world is like a sandwich and a peanut butter 👍
Jonathan
generally amnesi how long yrs memory loss
interpersonal relationships
Got questions? Join the online conversation and get instant answers!
Source:
OpenStax, Collaborative statistics homework book: custom version modified by r. bloom. OpenStax CNX. Dec 23, 2009 Download for free at http://legacy.cnx.org/content/col10619/1.2
Google Play and the Google Play logo are trademarks of Google Inc.
