<< Chapter < Page Chapter >> Page >

"The Problem with Angels" by Cyndy Dowling

Although this problem is wholly mine, The catalyst came from the magazine, Time.On the magazine cover I did find The realm of angels tickling my mind. Inside, 69% I found to be In angels, Americans do believe. Then, it was time to rise to the task, Ninety-five high school and college students I did ask.Viewing all as one group, Random sampling to get the scoop. So, I asked each to be true, "Do you believe in angels?" Tell me, do! Hypothesizing at the start, Totally believing in my heartThat the proportion who said yes Would be equal on this test. Lo and behold, seventy-three did arrive, Out of the sample of ninety-five.Now your job has just begun, Solve this problem and have some fun.
  • 1.65
  • 0.0984
  • Decision: Do not reject null
  • ( 0 . 6836 , 0 . 8533 ) size 12{ \( 0 "." "6836",0 "." "8533" \) } {}
Got questions? Get instant answers now!

"Blowing Bubbles" by Sondra Prull

Studying stats just made me tense, I had to find some sane defense.Some light and lifting simple play To float my math anxiety away. Blowing bubbles lifts me high Takes my troubles to the sky.POIK! They're gone, with all my stress Bubble therapy is the best. The label said each time I blew The average number of bubbles would be at least 22.I blew and blew and this I found From 64 blows, they all are round! But the number of bubbles in 64 blowsVaried widely, this I know. 20 per blow became the meanThey deviated by 6, and not 16. From counting bubbles, I sure did relax But now I give to you your task.Was 22 a reasonable guess? Find the answer and pass this test!
Got questions? Get instant answers now!

21. "Dalmatian Darnation" by Kathy Sparling

A greedy dog breeder named Spreckles Bred puppies with numerous frecklesThe Dalmatians he sought Possessed spot upon spotThe more spots, he thought, the more shekels. His competitors did not agree That freckles would increase the fee.They said, “Spots are quite nice But they don't affect price;One should breed for improved pedigree.” The breeders decided to prove This strategy was a wrong move.Breeding only for spots Would wreak havoc, they thought.His theory they want to disprove. They proposed a contest to Spreckles Comparing dog prices to freckles.In records they looked up One hundred one pups:Dalmatians that fetched the most shekels. They asked Mr. Spreckles to name An average spot count he'd claimTo bring in big bucks. Said Spreckles, “Well, shucks,It's for one hundred one that I aim.” Said an amateur statistician Who wanted to help with this mission.“Twenty-one for the sample Standard deviation's ample: They examined one hundred and one Dalmatians that fetched a good sum.They counted each spot, Mark, freckle and dotAnd tallied up every one. Instead of one hundred one spots They averaged ninety six dotsCan they muzzle Spreckles’ Obsession with frecklesBased on all the dog data they've got?
  • -2.39
  • 0.0093
  • Decision: Reject null
  • ( 91 . 854 , 100 . 15 ) size 12{ \( "91" "." "854","100" "." "15" \) } {}
Got questions? Get instant answers now!

"Macaroni and Cheese, please!!" by Nedda Misherghi and Rachelle Hall

As a poor starving student I don't have much money to spend for even the bare necessities. So my favorite and main staple food is macaroni and cheese. It's high in taste and low in cost and nutritional value.

One day, as I sat down to determine the meaning of life, I got a serious craving for this, oh, so important, food of my life. So I went down the street to Greatway to get a box of macaroni and cheese, but it was SO expensive! $2.02 !!! Can you believe it? It made me stop and think. The world is changing fast. I had thought that the mean cost of a box (the normal size, not some super-gigantic-family-value-pack) was at most $1, but now I wasn't so sure. However, I was determined to find out. I went to 53 of the closest grocery stores and surveyed the prices of macaroni and cheese. Here are the data I wrote in my notebook:

    Price per box of mac and cheese:

  • 5 stores @ $2.02
  • 15 stores @ $0.25
  • 3 stores @ $1.29
  • 6 stores @ $0.35
  • 4 stores @ $2.27
  • 7 stores @ $1.50
  • 5 stores @ $1.89
  • 8 stores @ 0.75.

I could see that the costs varied but I had to sit down to figure out whether or not I was right. If it does turn out that this mouth-watering dish is at most $1, then I'll throw a big cheesy party in our next statistics lab, with enough macaroni and cheese for just me. (After all, as a poor starving student I can't be expected to feed our class of animals!)

Got questions? Get instant answers now!

Questions & Answers

Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
what school?
biomolecules are e building blocks of every organics and inorganic materials.
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
sciencedirect big data base
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
characteristics of micro business
for teaching engĺish at school how nano technology help us
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
what is the actual application of fullerenes nowadays?
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
is Bucky paper clear?
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Do you know which machine is used to that process?
how to fabricate graphene ink ?
for screen printed electrodes ?
What is lattice structure?
s. Reply
of graphene you mean?
or in general
in general
Graphene has a hexagonal structure
On having this app for quite a bit time, Haven't realised there's a chat room in it.
what is biological synthesis of nanoparticles
Sanket Reply
1 It is estimated that 30% of all drivers have some kind of medical aid in South Africa. What is the probability that in a sample of 10 drivers: 3.1.1 Exactly 4 will have a medical aid. (8) 3.1.2 At least 2 will have a medical aid. (8) 3.1.3 More than 9 will have a medical aid.
Nerisha Reply

Get the best Algebra and trigonometry course in your pocket!

Source:  OpenStax, Collaborative statistics. OpenStax CNX. Jul 03, 2012 Download for free at http://cnx.org/content/col10522/1.40
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Collaborative statistics' conversation and receive update notifications?