Total # Posts: 1,005
A researcher plans to use a sample of 500 men and women attending a well-known online university to study the relationship between the number of fast-food hamburgers consumed in a month and BMI (body mass index). The null hypothesis is that there is no relationship between ...
May 10, 2012
A bag contains 5red balls and 4 white balls. Two balls are drawn at random from the bag. The first ball drawn is put back into the bag before the second ball is drawn. What is the probability that the two balls drawn are both red?
April 16, 2012
A 355-g piece of metal at 48.0 degree celsius is dropped into 111g of water at 15.0 degree celsius.If the final temperature of the mixture is 32.5 degree celsius what is the specific heat of the metal?
April 16, 2012
Meera arrived at her grandmother's house at 8:00 a.m. First they made cookies. At 10:00 a.m. they played tennis. At 12:30 p.m. they mde sandwiches. At 12:45 they ate the sandwiches and the cookies. How much time did Meera and her grandmother spend making food?
March 19, 2012
I have to revise these sentences as if speaking to a 10th grade level in education. Can you tell me if these are correct: 1. We must terminate all deficit financing. Revision: We need to end all debts. 2. We must endeavor to correct this problem by expediting delivery. ...
March 5, 2012
A block of copper at 100 degrees Celsius comes in contact with a block of aluminum at 20 degrees Celsius. The final temp of the blocks is 60 degrees Celsius. What are the relative masses of the blocks?
March 1, 2012
a rectangular family room has 204 square feet of it takes 1 3/8 yards of material to make one shirt. how many shirts can be made from 16 1/2 yards of material? 1.1 2.3 3.6 4.12 5.24
February 9, 2012
Suppose that a senior driving a Pontiac zooms out of a darkened tunnel at 31.0 m/s. She is momentarily blinded by the sunshine. When she recovers, she sees that she is fast overtaking a bus ahead in her lane moving at the slower speed of 15.7 m/s. She hits the brakes as fast ...
February 1, 2012
A catapult on a cliff launches a large round rock towards a ship on the ocean below. The rock leaves the catapult from a height H = 31.0 m above sea level, directed at an angle theta = 48.5° above the horizontal, and with a speed v = 35.6 m/s. Assuming that air friction ...
February 1, 2012
An experiment always starts with: data collection or theory or group selection or randomization. I have you ask a question then do background research....so does that mean the answer to the question would be data collection? Sorry
January 21, 2012
can you help me with this problem,? here is the number of lunches served last week at a school. 234,234,245,250,255. I already got the median is 245 set and Mode is 234 set. what do you think will be the next number of lunches serves?--- why?-----
January 11, 2012
Can you help me relate what I call dangerous dogs, specifically, like dogs who attack other dogs on a walk and then go on to attack the person walking the dog to the 3 sociological perspectives: functionalism, conflict and interactionism Please if you can just get me started ...
January 2, 2012
anatomy and physiology
the wide band of fibers that sep[arates the two hemispheres of the cerebrum is called the? 1 choroid plexus,2 central fissure ,3 cerebral aqueduct or 4 corpus callosum
December 27, 2011
university of phoenix
Does lovastatin (a cholesterol-lowering drug) reduce the risk of heart attack? In a Texas study, researchers gave lovastatin to 2,325 people and an inactive substitute to 2,081 people (average age 58). After 5 years, 57 of the lovastatin group had suffered a heart attack, ...
December 19, 2011
In Dallas, some fire trucks were painted yellow (instead of red) to heighten their visibility. During a test period, the fleet of red fire trucks made 153,348 runs and had 20 accidents, while the fleet of yellow fire trucks made 135,035 runs and had 4 accidents. At α = ....
December 19, 2011
List all possible or potential rational zeros for the polynomial below find all real zeros of the polynomial below and factor completely over the real numbers. f(x) x^4 + 10x^3 + 12x^2 - 58x + 35 Someone anyone?????
December 9, 2011
I have a research paper due tonite at mid-nite and need to know if you have previous research on this paper.My son was hospitalized and i have been unable to complete the assignment....
December 5, 2011
ocus of the Research Paper Carefully review the scenario below: Susan and Molly, employees in a busy call center, are chatting at lunch. Between bites of fried chicken, French fries, high calorie soda, and a tiny salad, Susan begins to complain to Molly that she cant ...
December 5, 2011
The heat capacity of liquid water is 4.18 J/g·°C and the heat of vaporization is 40.7 kJ/mol. How many kilojoules of heat must be provided to convert 1.00 g of liquid water at 67°C into 1.00 g of steam at 100°C?
November 13, 2011
A floor-finishing machine uses bars of wax. Once the bar is worn down to 1/2 its original size, it must be replaced with a new bar. Only full-size bars can be put in the machine. The pieces are melted and recycled to make full-size bars. If you buy 24 bars and recycle all the ...
November 10, 2011
The more I read I'm getting confused. Just want to make sure. Winds that pass through an upper level trough go counter-clockwise in the Northern Hemi & clockwise in the Southern Hemi, right?? Thanks
October 29, 2011
If someone could check my answer: Dynamic lows are accentuated due to the fact that they rotate in the same direction as the Earth's surface (Cyclonic flow). This is called-----CORIOLIS EFFECT....Thanks
October 24, 2011
Statistics: Percentile Rank
A survey of college students was conducted during final exam week to assess the number of cups of coffee consumed each day. The mean number of cups was 5 with a standard deviation of 1.5 cups. The distribution was normal. A. What proportion of students drank 7 or more cups of ...
October 18, 2011
I just want to make sure this is correct. Ocean currents moving from low latitudes to high are GULFSTREAM, while those moving from high to low are CANARY.The all caps are my answers and I have searched the web and how found several things that might be it but I think it is ...
October 16, 2011
In Hadley's cell model warm air rises at the equator and cold air sinks at the poles. Can someone tell me what these 2 questions mean? Surface air flow will be _________. Air flow aloft will be _______. Don't understand those two. Thanks
October 15, 2011
How many simple random samples, SRS's, are possible of size 40 from a population of size 5000? (express in scientific notation 4 sign. figures) * I'm not sure how to start off.
October 2, 2011
anatomy and physiology 1
during an emergency room examination for an injured arm, the physician palpates the arms entire lenght starting at he shoulder and ending at the fingers of the hand , this process takes him from an
September 30, 2011
Preschoolers use private speech: A. to influence others B. to keep some of their ideas a secret c. because it is more efficient d. because it enables them to communicate new ideas.
September 14, 2011
You wish to make 1L of sterile lysis buffer soln. that is 10mM Tris-EDTA (pH 8) and 2% SDS. You have plenty of the following stock solns.: 2M Tris-EDTA (pH 8) and 20% SDS. However, SDS cannot be autoclaved and must be added to the soln. after autoclaving is done. Assume that ...
September 12, 2011
How many KJ are released when 75.0g of steam at 100 degree C condenses cools to 0 degree C and freezes at 0 degree C? I set it up like this but it is wrong, What am I doing wrong: 75g x 2260J/1g water x 1Kj/1000J =
September 11, 2011