Science & Mathematics - 21 January 2007

Lets test highschool chemistry. Its been a while for me.

2007-01-21 15:11:28 · 3 answers · asked by Roy W 2 in Chemistry

Please be thorough!

The National Highway Association is studying the relationship between the number of bidders on a highway project and the winning (lowest) bid for the project. Of particular interest is whether the number of bidders increases or decreases the amount of the winning bid.


Project - Number of Bidders x - Winning bid in millions y
1-9-5.1
2-9-8
3-3-9.7
4-10-7.8
5-5-7.7
6-10-5.5
7-7-8.3
8-11-5.5
9-6-10.3
10-6-8
11-4-8.8
12-7-9.4
13-7-8.6
14-7-8.1
15-6-7.8

a.Determine the regression equation. Interpret the equation. Do more bidders tend to increase or decrease the amount of the winning bid?
b.Estimate the amount of the winning bid if there were seven bidders.
c.A new entrance is to be constructed on the Ohio Turnpike. There are seven bidders on the project. Develop a 95 percent prediction interval for the winning bid.
d.Determine the coefficient of determination. Interpret its value.

2007-01-21 15:10:39 · 5 answers · asked by Colique 2 in Mathematics

2007-01-21 15:10:33 · 3 answers · asked by Swirly 7 in Zoology

2007-01-21 15:08:19 · 3 answers · asked by stephani g 1 in Biology

-Archaea
-Eukarya
-Bacteria
-Viruses

2007-01-21 15:08:10 · 4 answers · asked by Steenskees 2 in Biology

where are the incident and refracted rays located in relation to the normal??

2007-01-21 15:07:08 · 2 answers · asked by heyheyhey 2 in Physics

its for a science project

2007-01-21 15:06:58 · 2 answers · asked by Andrew M 1 in Other - Science

2007-01-21 15:03:29 · 6 answers · asked by candy 1 in Mathematics

2007-01-21 15:03:03 · 6 answers · asked by marder_2006 2 in Chemistry

i recently did a mitosis lab, focusing on the stages of mitosis. like how long the cell takes to get through each phase and what happens in each phase. we studied the onion root tip cell. what's a question that could lead to more on this topic?

2007-01-21 15:03:02 · 2 answers · asked by Anonymous in Biology

I can't seem to find the answer to this anywhere. Could a chemistry expert help me out?

2007-01-21 14:57:21 · 6 answers · asked by Tres S 2 in Chemistry

"p hat" means proportion in the field of statistics. It looks like a "p" with a ^ on top. I'd like to know how to type it on a word processor.

2007-01-21 14:56:32 · 3 answers · asked by snapple232 3 in Mathematics

2007-01-21 14:56:23 · 11 answers · asked by Swirly 7 in Weather

2. Vitamin C has a formula of C6H8O6.
a. The recommended daily dose of vitamin C is 60 mg. How many moles are you consuming if you ingest 60 mg of the vitamin?
b.A typical tablet contains 1.00g of vitaminC. How many moles of vitaminC does this represent?
c. When you consume 1.00g of vitaminC, how many oxygen atoms are you eating?

Please, any help with this question will be greatly appreciated; if possible show the steps you did to get the answer.

2007-01-21 14:56:14 · 4 answers · asked by j a 1 in Chemistry

I wanted to do jello for cytoplasm...
but everybodys doing that and i want a good grade...
and besides... we're not allowed to mix jello and chocolate, and i like chocolate better, so no jello...
i was thinking chocolate chips for ribosomes, but im clueless on the rest :[
please help!
>:[ i know my science teachers going crazy with cell projects!

2007-01-21 14:54:37 · 3 answers · asked by help! 1 in Biology

2007-01-21 14:53:51 · 4 answers · asked by kateyes 1 in Mathematics

2007-01-21 14:53:30 · 10 answers · asked by Kourtnye L 1 in Astronomy & Space

a. before
b. after
c. neither a or b
d. both a and b

2007-01-21 14:53:09 · 7 answers · asked by hinnie22001 1 in Chemistry

2007-01-21 14:51:05 · 5 answers · asked by ? 1 in Physics

why do we need to sleep atleast 8 hour rest time.
and what would happen if you don't sleep?

2007-01-21 14:51:00 · 6 answers · asked by Anonymous in Biology

-protoplast fusion
-a gene gun
-microinjection
-electroporation
-Agrobacterium

2007-01-21 14:50:21 · 3 answers · asked by Steenskees 2 in Biology

Please this is really important this is due tmorrow and i can either pass or fail my classs help me pleaseee

2007-01-21 14:47:53 · 1 answers · asked by money pimp 1 in Physics

2007-01-21 14:47:47 · 6 answers · asked by Anonymous in Physics

I need definition, and example.
Properties of metals,Properties of nonmetal,Metallic bond,Covalent bond,Ionic bond

2007-01-21 14:47:24 · 1 answers · asked by Anonymous in Chemistry

I left my Bio notes and book at school...yeah I'm an idiot. Trying to Google this stuff, but yeah it doesn't give very good answers.

2007-01-21 14:47:14 · 1 answers · asked by Jeff 2 in Biology

in my country i couldn't watch a theatre play because it involves nudity , so they banned it .and i , legaly major , couldn't choos for myself if i want or not to watch it.so...where is my freedome of chois?

2007-01-21 14:46:43 · 1 answers · asked by whatever 1 in Geography

You have to find the element the clue talked about, For example, A metal found in your blood, answer, Iron. The clues are, What do you use to press a shirt, what is the motto for a well digging company, policeman (some clues, I don't understand, remember, the element for each clue), A Lone Ranger's horse, and a cowboy's cry after riding a bronco, "I... , 2000 lbs casket, the leg joint above the calf, and also explain why

2007-01-21 14:46:06 · 4 answers · asked by Anonymous in Chemistry

2007-01-21 14:45:59 · 4 answers · asked by jb 1 in Astronomy & Space

Tell me if this is easier than it sounds:

Shirley is 21 years older than Laura. In six years, Shirley will be twice as old as Laura. How old are they now?

I feel like Shirley is ALWAYS going to be as twice as old as Laura if she also is in six years. Is this just a trick question? Any help is appreciated.

2007-01-21 14:44:55 · 14 answers · asked by Mellio 2 in Mathematics

Okay so im a high school senior right now and i am currently taking Advanced Placement Physics. Our teacher is a really really bad teacher and he doesnt teach he sleeps through class. If he taught well, we woudl be able to do problems he assigns us in five minutes. Instead we take up 40 minutes to do SIMPLE EASY problems.

Now i was always fascinated by bridges and tall buildings and roads and how much it takes to let them withstand all these stress es on them.. Anyways now that im taking that AP Physics class im really starting to not like physics. We dont do homework in the class and we dont try simply because the teacher is very bad and doestn teach. Its a joke to me right now and im thinking of not becoming an engineer. Also i am not a genius in math...i love math but it takes some time and effort for me to understand it. Should i go to become an engineer or should i go find something else to do with my life?

2007-01-21 14:44:55 · 11 answers · asked by tstec04 1 in Engineering