Thursday
December 8, 2016

# Posts by reba

Total # Posts: 21

Statistics
"John"'s answer is incomplete. The real solution is: W_female: (235.1 - 197.2)/2 = 18.45 t-value for females: 2.048 SD_female: (W*sqrt(n))/t = (18.45*sqrt(29))/2.048 = 48.5 As stated, the margin of error for males is 10. We assume the t-value for males is 2 based...
October 15, 2016

Biology
October 9, 2015

Social Studies
anadian was once part of British and French. The people in Quebec are most likely French or have a French ancestry. They speak French their and counts it as a main language. I think Quebec want to break away because of its French history or canadian's involvement with ...
March 28, 2013

math
the perimeter of a dog park is 156 ft. If the length of the park is 2 ft. less than 3 times the width, what are the dimensions of the dog park?
October 21, 2012

Any ideas for math fair for my first grader using patterns?
January 10, 2012

arithmetic
whats the first term if the third term is 21 and the eighth term is 56?
November 30, 2011

math
write down four odd digits that summ up to 19.
September 25, 2011

biology
why does it make a difference if you measure metabolic rate in terms of o2/animal or o2/g
September 4, 2011

statistics
For a population that has a standard deviation of 10, figure the standard deviation of the distribution of means for samples of size 3.
June 14, 2011

physical science
a force used to lift a 12-kilogram mass to a height fo 8 meters in 2 seconds does 1040 joules of work. how much force is used.
January 2, 2011

Biochemistry
A protein molecule in its folded native state has one favored conformation, but when it is denatured it becomes a random coil, with very many possible conformations. What must be the sign of the change in entropy (S) for the change native---> denatured Would this be ...
September 13, 2009

algebra
forget k x/100 _______ (6-x)/100 solve for x
September 1, 2009

algebra
k= x/100 _______ (6-x)/100 how to work? what to do next??
September 1, 2009

o-chem
30g malononitril in 300ml water, soluabiltity 20g/100ml in ether...13.3g/100ml water. what weight recovered by 3 100ml extractions using ether..i need help..how to work??
August 30, 2009

o-chem
what volume? sorry out of school for 30yrs! also 2nd part give soluability of 20/100ml in ether & 13.3g/100ml in water and the experiment is being done with 30g (mw 188.61) in 300ml of water to be extracted wih ether. I don't knwo how to proceed
August 27, 2009

o-chem
300ml aq solution of 30g malononitrile extracted w/ether If K = 1.5 what results would be acheived from 3 100ml portions of ether...MORE importantly how do you work the problem..thanks
August 27, 2009

Math
In a survey of 50 students, 23 owned cellular phones, 18 ownded digital cameras, X owned cellular phones and digital camera, 2X owned neither. a) How do i write an expression in X for the Total number of students in the survey and how do i find for X????
June 15, 2009

history
on the impeachment of the chief justice of the supreme court who tries the case
March 25, 2009

Finance
i Craig: I am already having trouble understanding Chapter 6, problem 2 on page 207 of textbook. I am currently on week 3 of the FIN 200 class. The problem reads as follows: If you require a 9 percent return on your investments, which would you prefer? a. \$5,000 today b. \$15,...
October 25, 2008