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post #1 of 12 (permalink) Old 08-15-2008, 08:07 PM Thread Starter
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Statistics??

Any one good with statistics? I have a quiz on confidence intervals and hypothesis testing.

I somewhat get confidence intervals, but clueless on hypothesis testing.

HELP!!!!!

Did I also say that I hate statistics..

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post #2 of 12 (permalink) Old 08-15-2008, 09:58 PM
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My undergrad was called "Information and Decision Sciences" which was a combination of Business Management, Computer, and Statistics classes. I wish I could remember half of what I learned to help, but alas I cannot. I remember not hating statistics, but I definitely didn't "like" it either.

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post #3 of 12 (permalink) Old 08-16-2008, 08:22 AM Thread Starter
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Originally Posted by pcohenchicago View Post
My undergrad was called "Information and Decision Sciences" which was a combination of Business Management, Computer, and Statistics classes. I wish I could remember half of what I learned to help, but alas I cannot. I remember not hating statistics, but I definitely didn't "like" it either.
Hating is a bad word, it not liking me is better?

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post #4 of 12 (permalink) Old 08-16-2008, 08:34 AM
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Quote:
Originally Posted by JRSMAIL View Post
Any one good with statistics? I have a quiz on confidence intervals and hypothesis testing.

I somewhat get confidence intervals, but clueless on hypothesis testing.

HELP!!!!!

Did I also say that I hate statistics..
Let me see what I can dig up, I just took 2 statistic classes not too long ago. What are you needing help with? 1 tail, 2 tail test stuff like this?
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post #5 of 12 (permalink) Old 08-16-2008, 08:37 AM
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try looking on the web for tutorials. I don't remember any of it. The class is easy. The only hard part is remembering the formulas and when to use them.
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post #6 of 12 (permalink) Old 08-16-2008, 08:40 AM
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if you are able to use a laptop for your quiz put the formulas in excel. Then just plug the numbers in. Thats what I did. If you are able to do that, I am sure I have some of the excel sheets left for the z & t table stuff.
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post #7 of 12 (permalink) Old 08-16-2008, 08:44 AM Thread Starter
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Originally Posted by taledarkside View Post
try looking on the web for tutorials. I don't remember any of it. The class is easy. The only hard part is remembering the formulas and when to use them.
That's my problem, knowing when to use what formula, after that it is plug and chug.

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post #8 of 12 (permalink) Old 08-16-2008, 08:45 AM Thread Starter
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Originally Posted by Guess Who? View Post
if you are able to use a laptop for your quiz put the formulas in excel. Then just plug the numbers in. Thats what I did. If you are able to do that, I am sure I have some of the excel sheets left for the z & t table stuff.
The quiz is online and can be taken any time, but I the final in two weeks we can only use a TI-84.

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post #9 of 12 (permalink) Old 08-16-2008, 08:48 AM
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OK let me see what my instructor gave us, shoot me a pm with your email and I will forward any info I have to you. Hopefully something will help.
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post #10 of 12 (permalink) Old 08-16-2008, 08:51 AM
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try this
http://occawlonline.pearsoned.com/bo...e-content.html
i don't have my computer setup since my virus to view the powerpoint

I remember a cd question on the test if 10% of cds are bad out of 500 and 1000 are made. You had to use a power formula. Ti calc is good for formulas.

I had some tail 1 and tail 2 problems someplace but I cant remember where at. doh
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post #11 of 12 (permalink) Old 08-16-2008, 08:56 AM
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roulette wheel has 38 slots numbered 1 to 36, 0 and 00.
One half of the numbers 1 to 36 are red, the other half black, and
0, 00 are green. 2 types of bets :
bet on number (0, 00, 1 – 36)
bet on color (red or black)
If one places one dollar on red, if the winner number is red, one wins one dollar and lose the bet otherwise
If one places one dollar on number, if the winner number is the same as bet, one wins $36 and lose the bet otherwise

What is the expected value for the player for both cases:
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post #12 of 12 (permalink) Old 08-16-2008, 10:07 AM
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Don't know anything about statistics, I've only taken calculus and calculus based classes. Put the formulas in your calculator. See if you can use a TI-89 calculator. I know for calculus it has an ass load of functions that make it much easier, I suspect it probably has some good stats functions built in as well. I've been able to use my 89 in any class where calculators are allowed. You can always put the equations in your calculator. I've even written notes and stuff.

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