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Calgaryrocky
11-05-2013, 10:46 PM
So my girlfriend is going to Uleth and i'm trying to help her with stats but i'm hitting a wall here.

If anyone could help with the following two questions on how to solve them that would be awesome! Not really looking for only the answer but the method or steps on how to solve?

Thanks in advance

1. At a recent halloween party five students and their opposite sex partners were enjoying some halloween spirits. One of them noticed that the males were drinking more than the females, which was correct. If 7 was the mean number of drinks for a male and 5 for females with a standard deviation of 2 drinks for the whole group what was the correlation between gender and the number of drinks consumed.

2. Despite the outrageous salaries in the oil patch the mean salary for an oil and gas worker is $80,000 with a standard deviation of 1000. If one worker appears to earn better than most and only 25% of the other workers make more than him, what is his income?

Any help is appreciated.

Thanks again!!

cet
11-06-2013, 08:39 AM
For question 2. Use the formula for Z and solve for x.

z = x - x(bar)
------------
standard deviation

Remember Z is an area from left to right. You need how many prople he earns more than - which is 75%.
Go to the Z table and look up a value of .75.
It's between 0.67 and 0.68. If they want a more exact answer use linear interpolation go get it.
Input all the information you have into the formula above and solve for x.
Using 0.67 I got a value of $80,670

NoMoreG35
11-06-2013, 08:41 AM
This sounds like high school all over again...

Tik-Tok
11-06-2013, 10:17 AM
I also have one.

If one poster asks for help for his g/f on Beyond, and another gives him the answer, how many more posters are required to ask for pics of OP's g/f?

Sorath
11-06-2013, 10:18 AM
PICS OF GF?

DeleriousZ
11-06-2013, 10:22 AM
4th post. New record?

403ep3
11-06-2013, 01:46 PM
I'm surprised he actually got help..

Calgaryrocky
11-06-2013, 02:44 PM
Originally posted by cet
For question 2. Use the formula for Z and solve for x.

z = x - x(bar)
------------
standard deviation

Remember Z is an area from left to right. You need how many prople he earns more than - which is 75%.
Go to the Z table and look up a value of .75.
It's between 0.67 and 0.68. If they want a more exact answer use linear interpolation go get it.
Input all the information you have into the formula above and solve for x.
Using 0.67 I got a value of $80,670


Thank you!!!

mastercool12
11-11-2013, 01:42 PM
why not just buy the test bank for the text book?

usually the prof just takes all the questions out of there anyways...just do a google search for "insert text book name here" professor test bank. gg

dirtsniffer
11-11-2013, 06:06 PM
That was some simple stuff.

Wish her luck on exams.

kvg
11-11-2013, 06:36 PM
Originally posted by Sorath
PICS OF GF?

When I read the thread title I clicked on it just to make sure that happened:thumbsup: