Science & Mathematics - 22 September 2006

A firm needs to find 100 people who regularly purchase orange juice to complete a survey on a new frozen juice. They sampled 500 people & 75 orange juice buyers have been found. Based upon this info - how many additional people in random sample do they need to interview to reach an expected total of 100 people who regularly purchased orange juice?

How would u calculate this?

2006-09-22 07:26:48 · 6 answers · asked by Anonymous in Mathematics

2006-09-22 07:24:14 · 3 answers · asked by RUSTON S 1 in Botany

my friend said she learned this in a fourth year zoology lecture

2006-09-22 07:21:07 · 17 answers · asked by sarahsoutar 2 in Zoology

f(x)=6x^2+7x-24.

And what is the minimum or maximum value of f(x)?

2006-09-22 07:19:59 · 8 answers · asked by pnoiz1 2 in Mathematics

it came out of an older stove and i know it's not mercury.. it smokes when hits air, and sparks a flame when it hits anything solid...

any ideas?

2006-09-22 07:18:43 · 6 answers · asked by a_dark_shaolin 2 in Other - Science

My customers use my services monthly, bi-monthly, quarterly, semi-annually and annually. I also have customers that call me every 4 months. How is that stated in relation to the above? I can't figure out how to word it without saying - "every four months".

2006-09-22 07:16:29 · 8 answers · asked by I have a ? 2 in Mathematics

Joes Pretzels will increase salt content by 50%. Currenly one bag is being sold at 1.09 with a .11 profit on each bag sold. The additional salt will increase production cost by .04 per bag. Last quarter, they sold 2.4 million bags. Assuming price of the product remains, if they increase to 50% more salt, how many additional bags will they have to sell to have same profit?

2006-09-22 07:14:05 · 1 answers · asked by Anonymous in Mathematics

2006-09-22 07:13:07 · 4 answers · asked by furches8 1 in Chemistry

2006-09-22 07:09:37 · 7 answers · asked by tweako 1 in Chemistry

2006-09-22 07:07:20 · 5 answers · asked by John G 5 in Other - Science

The results of surveying 100 residents of a city reported that 40 read the daily morning paper, 70 read the daily evening paper & 20 read neither. How many:
1. Read at least 1 paper?
2. Read both?
3. Read exactly one daily paper?

Please assist in how you would calculate the above.
Thank you.

2006-09-22 07:07:11 · 9 answers · asked by luckygirl7721 1 in Mathematics

2006-09-22 07:04:15 · 2 answers · asked by Anonymous in Chemistry

2006-09-22 06:55:34 · 12 answers · asked by Anonymous in Weather

Best guess known reserves are 4 trillion barrels of oil. We burn 90 million barrels a day world wide. Barrel of oil = 42 gallons.

2006-09-22 06:55:04 · 6 answers · asked by Mr Smartty Pants 1 in Mathematics

Don't you think robotic missions are less risky and cheapper? What's behind the goverment intentions to spend billions in something that has no apparent gain other than prestige?

2006-09-22 06:54:30 · 20 answers · asked by Manny L 3 in Astronomy & Space

if there is a change in either participants?

2006-09-22 06:52:10 · 4 answers · asked by rod h 3 in Other - Science

2006-09-22 06:52:05 · 27 answers · asked by MzMarquesHouston_225 1 in Astronomy & Space

2006-09-22 06:51:57 · 8 answers · asked by cherie 1 in Astronomy & Space

How many grams of F2 are needed to produce 120. g of PF3 if the reaction has a 74.5 % yield?

2006-09-22 06:51:50 · 1 answers · asked by Anonymous in Chemistry

During a titration, the following data were collected. A 25mL portion of an unknown solution was titrated with 1.0 M NaOH. It required 65mL of the base to neutralize the sample. How many moles of acid are present in 3.0 liters of this unknown solution?

2006-09-22 06:51:04 · 8 answers · asked by Anonymous in Chemistry

what is the theoretical yield of carbon disulfide when 110. g of methane is reacted with an equal mass of sulfur.

2006-09-22 06:50:40 · 3 answers · asked by Anonymous in Chemistry

2006-09-22 06:50:34 · 2 answers · asked by Shavon D 1 in Chemistry

2006-09-22 06:49:32 · 9 answers · asked by Anonymous in Mathematics

insects seem to locate their nutrients in an inexplipable manner

2006-09-22 06:47:00 · 1 answers · asked by rod h 3 in Biology

does italy have seven mountains?

2006-09-22 06:46:34 · 8 answers · asked by Anonymous in Geography

If I start my car, how long does it take for the alternator to restore the energy expended by the starter back to the battery?

2006-09-22 06:44:20 · 6 answers · asked by Anonymous in Engineering

2006-09-22 06:42:36 · 6 answers · asked by swasteppers2005 1 in Physics

2006-09-22 06:38:13 · 3 answers · asked by theresa w 1 in Chemistry

2006-09-22 06:37:29 · 5 answers · asked by annyeap1990 2 in Biology

I would like the answer in cubic miles. If possible. I am pretty sure a barrel of oil is 50 gallons.

2006-09-22 06:29:12 · 6 answers · asked by Mr Smartty Pants 1 in Earth Sciences & Geology