The following data represent the running lengths (in minutes) of the winners of the Academy Award for Best Picture for the years 1999-2004:
[snipped, they list the six movies and their running times]
A) compute the population mean. [easy] List all possible samples with size n=2. There should be 6C2=15 samples. [again, easy] C) Construct a sampling distribution for the mean by listing the sample means and their corresponding probabilities. [The sampling means are easy, just add the two numbers in each sample and divide by 2, but how do I find their probabilities? It's not normally distributed.]
D) Compute the mean of the sampling distribution. [Easy] E) Compute the probability that the sample mean is within 15 minutes of the population mean running time. [I have no idea how to do this.]
The ones in bold I'm completely lost about. The textbook is fucking useless.
I feel like I might be missing some info, but are you allowed to force the data into being normal?
What do you mean?
I may have been overthinking it, will's thing sounds right. I'm digging out my stat textbook over here.
The following data represent the running lengths (in minutes) of the winners of the Academy Award for Best Picture for the years 1999-2004:
[snipped, they list the six movies and their running times]
A) compute the population mean. [easy] List all possible samples with size n=2. There should be 6C2=15 samples. [again, easy] C) Construct a sampling distribution for the mean by listing the sample means and their corresponding probabilities. [The sampling means are easy, just add the two numbers in each sample and divide by 2, but how do I find their probabilities? It's not normally distributed.]
D) Compute the mean of the sampling distribution. [Easy] E) Computer the probability that the sample mean is within 15 minutes of the population mean running time. [I have no idea how to do this.]
The ones in bold I'm completely lost about. The textbook is fucking useless.
the probability of each 2-sample mean value should be 1/15 unless i misunderstand
so find the mean value for all 6 films
find how many of the 2-sample means are within 15 minutes of this. call that number N
the probability of the 2-sample mean being within 15 minutes of the mean is N/15
it's kind of a dumb measurement. a better one is (number of films within 15 mins of mean)/6
tell your instructor this
Hmm okay the probabilities being 1/15 makes sense.
That last part is the way to find it out experimentally but I have the feeling she is looking for a specific calculation.
In the chapter we learn about how the sampling distribution approaches normality as the sample size increases, regardless of the distribution of the underlying population. So I am suspecting there's some way to equation it up without actually tallying them up and dividing.
A staten island is when you smash you head with a bottle of sambuca, shouting "HOW BOUT A LIL BUCA!"
and then you drink your own blood from your gold medallion necklace
if it is a rainbow necklace is it a Staten Island Fairy
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SarksusATTACK AND DETHRONE GODRegistered Userregular
edited April 2010
You guys are relentless.
In order to move I either need to wait until I can transfer to a four-year university out of state or I need to find a roommate so I can split costs, otherwise I will be stuck working a full-time job trying to pay for an apartment and I won't be able to go to school.
The following data represent the running lengths (in minutes) of the winners of the Academy Award for Best Picture for the years 1999-2004:
[snipped, they list the six movies and their running times]
A) compute the population mean. [easy] List all possible samples with size n=2. There should be 6C2=15 samples. [again, easy] C) Construct a sampling distribution for the mean by listing the sample means and their corresponding probabilities. [The sampling means are easy, just add the two numbers in each sample and divide by 2, but how do I find their probabilities? It's not normally distributed.]
D) Compute the mean of the sampling distribution. [Easy] E) Computer the probability that the sample mean is within 15 minutes of the population mean running time. [I have no idea how to do this.]
The ones in bold I'm completely lost about. The textbook is fucking useless.
the probability of each 2-sample mean value should be 1/15 unless i misunderstand
so find the mean value for all 6 films
find how many of the 2-sample means are within 15 minutes of this. call that number N
the probability of the 2-sample mean being within 15 minutes of the mean is N/15
it's kind of a dumb measurement. a better one is (number of films within 15 mins of mean)/6
tell your instructor this
Hmm okay the probabilities being 1/15 makes sense.
That last part is the way to find it out experimentally but I have the feeling she is looking for a specific calculation.
In the chapter we learn about how the sampling distribution approaches normality as the sample size increases, regardless of the distribution of the underlying population. So I am suspecting there's some way to equation it up without actually tallying them up and dividing.
eh it won't converge with a 2-sample mean and a 6-sample population but yeah you would calculate the variance, take 15 min. divided by variance to find how many sigmas, and look it up on a table to find the population probability within the bounds
In order to move I either need to wait until I can transfer to a four-year university out of state or I need to find a roommate so I can split costs, otherwise I will be stuck working a full-time job trying to pay for an apartment and I won't be able to go to school.
I hates me some time. Always fucking up my personal identity and shit.
I say we do away with Time, there must be some better alternative.
And I don't want to hear a bunch of whining "What about space and physics, boo hoo!"
LoserForHireX on
"The only way to get rid of a temptation is to give into it." - Oscar Wilde
"We believe in the people and their 'wisdom' as if there was some special secret entrance to knowledge that barred to anyone who had ever learned anything." - Friedrich Nietzsche
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SarksusATTACK AND DETHRONE GODRegistered Userregular
In order to move I either need to wait until I can transfer to a four-year university out of state or I need to find a roommate so I can split costs, otherwise I will be stuck working a full-time job trying to pay for an apartment and I won't be able to go to school.
what happened to chu?
i thought he was moving out of philly
I don't think he wants to do it, probably too risky, which I understand completely.
In order to move I either need to wait until I can transfer to a four-year university out of state or I need to find a roommate so I can split costs, otherwise I will be stuck working a full-time job trying to pay for an apartment and I won't be able to go to school.
what happened to chu?
i thought he was moving out of philly
he has been lulled into settling by the succubus
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JacobkoshGamble a stamp.I can show you how to be a real man!Moderatormod
edited April 2010
I fired up Rome: Total War again. I have a weird relationship with these games. I love the strategy sections and do pretty well at them, and I want to love the big epic battles where I move my lines of mans around and do cavalry charges and shit, but I am so terrible at that stuff that I end up auto-resolving every battle. But I feel like I'm cheating myself out of half the game.
Jacobkosh on
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Podlyyou unzipped me! it's all coming back! i don't like it!Registered Userregular
In order to move I either need to wait until I can transfer to a four-year university out of state or I need to find a roommate so I can split costs, otherwise I will be stuck working a full-time job trying to pay for an apartment and I won't be able to go to school.
In order to move I either need to wait until I can transfer to a four-year university out of state or I need to find a roommate so I can split costs, otherwise I will be stuck working a full-time job trying to pay for an apartment and I won't be able to go to school.
what happened to chu?
i thought he was moving out of philly
I don't think he wants to do it, probably too risky, which I understand completely.
what's risky is maintaining inertia working at a rite-aid in a shitty part of philly with no-account relatives and hoping that someday your life might turn around
yeah i'd have to sell everything i own (like, terminate my cell contract, sell my computer, sell my guitar, sell pretty much everything else), go to a new city, pay part of a first, last, and security, pay miscellaneous expenses, and hope i find a job IMMEDIATELY
and i'm not saying i won't ever have the balls to do that
but even if i sell everything i own i still won't have enough to give it a solid try
In order to move I either need to wait until I can transfer to a four-year university out of state or I need to find a roommate so I can split costs, otherwise I will be stuck working a full-time job trying to pay for an apartment and I won't be able to go to school.
what happened to chu?
i thought he was moving out of philly
he has been lulled into settling by the succubus
wait is he back with is ex?
no but they are having sex behind the back of the man she left him to get engaged to I guess
The following data represent the running lengths (in minutes) of the winners of the Academy Award for Best Picture for the years 1999-2004:
[snipped, they list the six movies and their running times]
A) compute the population mean. [easy] List all possible samples with size n=2. There should be 6C2=15 samples. [again, easy] C) Construct a sampling distribution for the mean by listing the sample means and their corresponding probabilities. [The sampling means are easy, just add the two numbers in each sample and divide by 2, but how do I find their probabilities? It's not normally distributed.]
D) Compute the mean of the sampling distribution. [Easy] E) Computer the probability that the sample mean is within 15 minutes of the population mean running time. [I have no idea how to do this.]
The ones in bold I'm completely lost about. The textbook is fucking useless.
the probability of each 2-sample mean value should be 1/15 unless i misunderstand
so find the mean value for all 6 films
find how many of the 2-sample means are within 15 minutes of this. call that number N
the probability of the 2-sample mean being within 15 minutes of the mean is N/15
it's kind of a dumb measurement. a better one is (number of films within 15 mins of mean)/6
tell your instructor this
Hmm okay the probabilities being 1/15 makes sense.
That last part is the way to find it out experimentally but I have the feeling she is looking for a specific calculation.
In the chapter we learn about how the sampling distribution approaches normality as the sample size increases, regardless of the distribution of the underlying population. So I am suspecting there's some way to equation it up without actually tallying them up and dividing.
eh it won't converge with a 2-sample mean and a 6-sample population but yeah you would calculate the variance, take 15 min. divided by variance to find how many sigmas, and look it up on a table to find the population probability within the bounds
Hmm. Okay there's a way to do that with my graphing calculator so I will try to figure it out.
Posts
Dude nacho cheese I told you last night!
I told you man
i invited you, not you and pillow-chan
we'd get along fine as long as you left her at home
it keeps happening
and then you drink your own blood from your gold medallion necklace
N.
nope
save your money so you can get out of Asshole, NY
I may have been overthinking it, will's thing sounds right. I'm digging out my stat textbook over here.
On the black screen
this
That last part is the way to find it out experimentally but I have the feeling she is looking for a specific calculation.
In the chapter we learn about how the sampling distribution approaches normality as the sample size increases, regardless of the distribution of the underlying population. So I am suspecting there's some way to equation it up without actually tallying them up and dividing.
if it is a rainbow necklace is it a Staten Island Fairy
In order to move I either need to wait until I can transfer to a four-year university out of state or I need to find a roommate so I can split costs, otherwise I will be stuck working a full-time job trying to pay for an apartment and I won't be able to go to school.
NANCHO!!!
you too?
you sir,
you
are a man of infinite jest
eh it won't converge with a 2-sample mean and a 6-sample population but yeah you would calculate the variance, take 15 min. divided by variance to find how many sigmas, and look it up on a table to find the population probability within the bounds
it's like you got broad side school fed up the bone bulge
On the black screen
what happened to chu?
i thought he was moving out of philly
I hates me some time. Always fucking up my personal identity and shit.
I say we do away with Time, there must be some better alternative.
And I don't want to hear a bunch of whining "What about space and physics, boo hoo!"
"We believe in the people and their 'wisdom' as if there was some special secret entrance to knowledge that barred to anyone who had ever learned anything." - Friedrich Nietzsche
I don't think he wants to do it, probably too risky, which I understand completely.
From what, 2 to 4?
YUP
only pleasure and paaa-aaaiiin
he has been lulled into settling by the succubus
Time is the horizon for the projection of Being.
wait is he back with is ex?
what's risky is maintaining inertia working at a rite-aid in a shitty part of philly with no-account relatives and hoping that someday your life might turn around
he needs to get out
and i'm not saying i won't ever have the balls to do that
but even if i sell everything i own i still won't have enough to give it a solid try
man
y'all kids these days with your lingo
i don't unnastand nonna what you kids are all jibberin an jabberin about these days
if i had ten grand i would leave philadelphia post haste
no but they are having sex behind the back of the man she left him to get engaged to I guess
Instead, you should play that as a 100% increase!
it was from The Office that is on right now
arrrgh goddamn you 3 month courses and the way you seep in and out of my brain
On the black screen