Saturday

June 25, 2016
Total # Posts: 927

**Math**

Let x represent the number which shows up when a balanced die is rolled. Then x is a random variable with a uniform distribution. Let x-bar denote the mean of the numbers obtained when the die is rolled 32 times. For samples of size 32, which of the following statements ...
*April 22, 2007*

**math**

A variable is normally distributed. 42% of the possible observations of the variable lie between 20 and 28. What information does this give you about the graph of the normal curve for this variable? I am not sure how to exactly explain this. The only thing I can imagine it ...
*April 22, 2007*

**math**

No idea how to do this. I looked in my book and there usually is a data set present to get the first, second and third quartile. The lifetimes of lightbulbs of a particular type are normally distributed with a mean of 392 hours and a standard deviation of 9 hours. Find the ...
*April 22, 2007*

**Government**

A police officer has arresteda suspect and produced evidence of wrongdoing.List 3 questions you would ask the officer to determine whether the freedom and the security of the suspect have been violated. Can I just list 3 questions from the miranda rights or would that just be ...
*March 28, 2007*

**science**

How is homeostasis maintained in the digestive system? Homeostasis is maintained by negative feedback - For example.....a thermostat controlling temperature. When the temp goes down, the thermostat senses it and turns on the heat. When it gets to hot, negative feedback occurs...
*March 27, 2007*

**Biology**

What is the formula for field of view? Thank you for using the Jiskha Homework Help Forum. Here are some sites that hopefully will help you: 1. (Broken Link Removed) 2. http://www.rainbowcctv.com/tech/angle.html 3. http://en.wikipedia.org/wiki/Depth_of_field
*March 8, 2007*

**Math**

My question is to get a better understanding of this. Basically, these two problems, I did it WITHOUT replacement. So I would multiply each defects and so forth. My question is, would I have to subtract the total from 1 in the second question? I am not exactly clear on when to...
*March 6, 2007*

**Math Probabilities**

A bag contains 9 red chips and 12 blue chips. Two chips are selected randomly without replacement from the bag. What is the probability that the two chips are the same color? That would be the probability of two reds PLUS the probability of two blues. The probability of two ...
*March 6, 2007*

**Biology**

Are IV fluids hypertonic, hypotonic, isotonic? The tonicity depends on what fluids are being used in the IV. Since this is not my area of expertise, I searched Google under the key words "IV fluids hypertonic hypotonic isotonic" to get these possible sources: http://...
*February 27, 2007*

**Biology**

Are any of these anabolic reactions? a. making starch from many glucose molecules b. making proteins from many amino acids c. making many glucose molecules from many glycogen molecules Since this is not my area of expertise, I searched Google under the key words "anabolic...
*February 27, 2007*

**More Chemistry**

HNO3
*February 15, 2007*

**math 4th grade**

If Sally gave a survey with five colors listed and ask each person who takes the survey to pick one color. She assumes that the results if given to 24 persons the results would be 1/2 blue, 1/12 red, 1/8 blue, 1/4 green, and 1/24 orange. What number of surveys would best prove...
*January 25, 2007*

**Chemistry**

how about expressing 230 parts per thousand (ppt) of SO4^2- in mol per kg? 230 ppt is 230 g/1000 g = 230 g/kg. Convert 230 grams into mols and you have it. SO, I come up with an answer of 2.39 mol/kg. Correct? J
*January 22, 2007*

**Economics**

did you ever get answer for this ?
*January 14, 2007*

**largest possible area**

The largest possible area is therefore A(max)=(1/2)xy =(1/2)[[5/sqrt(2)][5/sqrt(2)]] = (1/2)(25/2)= 25/4 sq cm
*November 18, 2006*

**acids and alkalis**

hi are you missy missy
*November 4, 2006*

**science**

What controversy was connected to Surface Mining Control and Recovery Act? Check this site for opposition to that act. http://www.teachcoal.org/aboutcoal/articles/coalamer.html
*October 27, 2006*

**word unscramble**

ttlrmehee
*September 28, 2006*

**BRAINTEASERS**

theres no place like home
*September 20, 2006*

**Distributive property**

Use the distributive property to remove the parentheses. -(-w-2u+2)
*September 20, 2006*

**physics**

So I'm still confused on what's happening here?
*September 18, 2006*

**Physics, Desperate Need of help!**

I would assume it's 80x32x26 = 66560cm^3
*August 31, 2006*

**australia's role in united nations**

Outline Australia’s positions and responsibilities in the United Nations australia plays a big role :P australia's role in the united Nations was to ..... not much Hey, it would help heaps if you could andwer this question, What is Australia's role in the United ...
*August 8, 2006*

**History, Geography**

Outline Australia’s positions and responsibilities in the United Nations
*August 8, 2006*

**History**

What has been Australia’s involvement in UNESCO, UN conventions and international environmental treaties? These sites detail Australia's involvement in these international organizations. http://www.dfat.gov.au/un/ https://www.cia.gov/cia/publications/factbook/geos/as....
*August 8, 2006*

**MATH - Rational Expressions**

HELP PLEASE! I am taking my college placement test tomorrow and am working on the sample test now. I need help with this question about Rational Expressions... For all r (<INSERT>is not equal to sign)+ or - 2 r(squared) - 5r+6 (All Over) r(squared)- 4 I know the answer ...
*August 16, 2005*

**Linear Equation in Two Variables**

I have to take a college placement test and am studying hte practive test. He is the question . . . What is the equation of the line that contains the points with (x,y) coordinates (-3,7) and (5,-1)? I know that the answer is y=-x+4, but I cannot remember from high school what...
*August 2, 2005*