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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.
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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.”
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D
On average, how many dice would you expect to show a “1”?
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E
Find the probability that all six dice show a “1.”
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F
Is it more likely that 3 or that 4 dice will show a “1”? Use numbers to justify your answer numerically.
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A
= the number of dice that show a 1
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B
0,1,2,3,4,5,6
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C
~
-
D
1
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E
0.00002
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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?
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E
Find the probability that at most 6 offer such courses.
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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?
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E
Find the probability that at most 4 students will attend.
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F
Find the probability that more than 2 students will attend.
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A
= the number of students that will attend Tet.
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B
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12
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C
~
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D
2.16
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E
0.9511
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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?
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E
Find the probability that 17 or 18 attend.
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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
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B
0, 1, 2, 3,... 25
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C
~
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D
10
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E
0.0442
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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
Discuss the differences between taste and flavor, including how other sensory inputs contribute to our perception of flavor.
taste refers to your understanding of the flavor . while flavor one The other hand is refers to sort of just a blend things.
Faith
While taste primarily relies on our taste buds, flavor involves a complex interplay between taste and aroma
Kamara
which drugs can we use for ulcers
Omeprazole
Cimetidine / Tagament
For the complicated once ulcer - kit
Patrick
what is the function of lymphatic system
to drain extracellular fluid all over the body.
asegid
The lymphatic system plays several crucial roles in the human body, functioning as a key component of the immune system and contributing to the maintenance of fluid balance. Its main functions include:
1. Immune Response: The lymphatic system produces and transports lymphocytes, which are a type of
asegid
to transport fluids fats proteins and lymphocytes to the blood stream as lymph
Adama
Anatomy is the identification and description of the structures of living things
Kamara
what's the difference between anatomy and physiology
Anatomy is the study of the structure of the body, while physiology is the study of the function of the body. Anatomy looks at the body's organs and systems, while physiology looks at how those organs and systems work together to keep the body functioning.
AI-Robot
what is enzymes all about?
Enzymes are proteins that help speed up chemical reactions in our bodies. Enzymes are essential for digestion, liver function and much more. Too much or too little of a certain enzyme can cause health problems
Kamara
how does the stomach protect itself from the damaging effects of HCl
little girl okay how does the stomach protect itself from the damaging effect of HCL
Wulku
it is because of the enzyme that the stomach produce that help the stomach from the damaging effect of HCL
Kamara
function of digestive system
function of digestive
Ali
what is the normal body temperature
please why 37 degree selcius normal temperature
Mark
the normal temperature is 37°c or 98.6 °Fahrenheit is important for maintaining the homeostasis in the body
the body regular this temperature through the process called thermoregulation which involves brain skin muscle and other organ working together to maintain stable internal temperature
Stephanie
anaemia is the decrease in RBC count hemoglobin count and PVC count
Eniola
what is the pH of the vagina
how does Lysin attack pathogens
Diya
I information on anatomy position and digestive system and there enzyme
anatomy of the female external genitalia
Organ Systems Of The Human Body (Continued)
Organ Systems Of The Human Body (Continued)
what's lochia albra
Kizito
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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
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