Saturday

October 25, 2014

October 25, 2014

Total # Posts: 18,541

**math**

Since x has to be negative, -6<x<0.
*December 22, 2013*

**Statistics**

Z = (score-mean)/SD Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability from the mean for both Z scores. Add the two probabilities.
*December 22, 2013*

**Statistics**

a. An independent variable is the potential stimulus or cause, usually directly manipulated by the experimenter, so it could also be called a manipulative variable. A dependent variable is the response or measure of results. b. The training program will not change the test ...
*December 20, 2013*

**Statistics**

a. They are further away from the mean. b. It decreases proportionately.
*December 20, 2013*

**Statistics**

True, you hope that the effect is significant.
*December 20, 2013*

**Statistics**

I have no idea of the significance of the ones and rectangles of dots. If you want a square root symbol (√), use the (option + v) keys. The standard deviation for a sample is usually indicated with s, but the mean of a population is indicated by µ (option + m). ...
*December 20, 2013*

**math**

22(140 + .12(475) = ?
*December 19, 2013*

**math**

You are right. I forgot to include the 10 in the range.
*December 19, 2013*

**math**

14, 21, 28, 35, 42, 49, 56, 63, 70, 77, 84, 91 and 98 are two-digit numbers that are multiples of 7. There are 89 two-digit numbers (10-99). 13/89 = ?
*December 19, 2013*

**statistics**

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (.25) and its Z score. Insert Z and other data into equation below and calculate. Z = (score-mean)/SD
*December 18, 2013*

**Pre-Algebra HELP!!!**

Add 5/3 to both sides. y = 1 + 5/3 = 2 2/3 or 8/3 Do you have a typo in your equation?
*December 18, 2013*

**Science**

(20 * .5)/2 = ?
*December 18, 2013*

**Math**

2 + 2 + 5 + 7 + 3 = 19 210 + 2 = 212
*December 17, 2013*

**Math**

180, 181, 182, 183 or 184
*December 17, 2013*

**Math (?)**

No table shown.
*December 17, 2013*

**English**

Right
*December 17, 2013*

**English 11A**

Please only post your questions once. Repeating posts will not get a quicker response. In addition, it wastes our time looking over reposts that have already been answered in another post. Thank you.
*December 17, 2013*

**math (?)**

More data needed. Equivalent of what?
*December 17, 2013*

**math (?)**

To find out what x equals, you need an equation, which has an equal sign (=).
*December 16, 2013*

**Science**

If "orange fish had been best camouflaged," they would be less likely be eaten.
*December 16, 2013*

**statistics**

a) Ho: mean heights = Ha: mean heights ≠ b) SEm = SD/√n c) Z = (score-mean)/SEm Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability related to the Z score. d) Once you ...
*December 16, 2013*

**statistics**

This is probably too late, but does "etc." include the mean and standard deviation?
*December 16, 2013*

**statistics-PLEASE HELP quick**

Please only post your questions once. Repeating posts will not get a quicker response. In addition, it wastes our time looking over reposts that have already been answered in another post. Thank you.
*December 16, 2013*

**math**

3,221/10,276 = ? * 100
*December 16, 2013*

**Science, very urgent please help**

I would agree definitely with A and F. Also E, if the light source did not cover the spectrum similar to sunlight.
*December 16, 2013*

**science **

We do not have your text.
*December 15, 2013*

**statistic (??)**

No table given. More data needed.
*December 15, 2013*

**science**

Compounds have different properties than their elements.
*December 15, 2013*

**Math**

P(4) = 1/12 P(5) = 1/12 Either-or probabilities are found by adding the individual probabilities.
*December 15, 2013*

**Math**

Melina gave you the total after increase. "The amount of increase" = .10 * 480 = 48
*December 14, 2013*

**Math**

Use the Chi-square (X^2) method. X^2 = ∑ (O-E)^2/E, where O = observed frequency and E = expected frequency. ∑ = sum of all the cells. E = (column total * row total)/grand total df = n - 1, where n = number of cells Look up value in X^2 table in the back of your ...
*December 14, 2013*

**Abnormal psychology**

Since I don't know the answer to your question, I searched Google under the key words "children adults anxiety depression" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=children+adults+anxiety+depression&ie=UTF-8&oe=UTF-8 In ...
*December 14, 2013*

**statistics**

No, unless you have more data that was not posted.
*December 14, 2013*

**statistic**

Use the Chi-square (X^2) method. X^2 = ∑ (O-E)^2/E, where O = observed frequency and E = expected frequency. ∑ = sum of all the cells. E = (column total * row total)/grand total df = n - 1, where n = number of cells Look up value in X^2 table in the back of your ...
*December 14, 2013*

**8th Grade Writing**

Haven't read the original post, but he could designate that the money be left in a particular spot and send a flunky to pick it up, while he watched from a distance. He could also have the money sent electronically to an out-of-country account.
*December 14, 2013*

**Statistics**

I will start it for you. Most numbers can be obtained in more than one way. 2 and 12, the only no pay numbers, can only be obtained one way. 3 = 2,1 or 1,2 = 2 ways 4 = 2,2 or 3,1 or 1,3 = 3 ways 5 = 3,2 or 2,3 or 1,4 or 4,1 = 4 ways etc.
*December 14, 2013*

**biology**

Are you assuming no cooking of food in advance? http://news.harvard.edu/gazette/story/2009/06/invention-of-cooking-drove-evolution-of-the-human-species-new-book-argues/
*December 14, 2013*

**Math**

Rephrasing might help. 1. (18-10)/2 = ? 2. What is 2 * 6? 3. Which two animals add to 12? 4. Which animal number has a factor of 3?
*December 14, 2013*

**Statistics**

I assume this is for a distribution of means. Z = (score-mean)/SEm SEm = SD/√n Plug in data and solve for Z.
*December 13, 2013*

**Stastics**

You are welcome.
*December 13, 2013*

**Stastics**

SEm = SD/√n = 4, 2 or 1 Plug in data and solve for n.
*December 13, 2013*

**Science**

Since this is not my area of expertise, I searched Google under the key words "difference heterogenous homogeneous mixture" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=difference+heterogenous+homogeneous+mixture&ie=UTF-8&oe=UTF...
*December 13, 2013*

**statistic (?)**

What is your question?
*December 13, 2013*

**Stats**

Z = (score-mean)/SEm SEm = SD/√n Assuming a normal distribution, find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (.05) and its Z score. Insert Z score and other data into...
*December 13, 2013*

**science very urgent help?**

Ho: RTc = RT(non-c) Ha: RTc < RT(non-c) (one-tailed) Ho: b Ha: c
*December 13, 2013*

**Biology**

The same as in any other body cell, 46. http://en.wikipedia.org/wiki/Human_genome#The_Human_Reference_Genome
*December 13, 2013*

**Statistics**

Standard deviation (SD) = square root of variance Z = (score-mean)/SD Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (.05) related to the Z score. Insert the values into ...
*December 13, 2013*

**Math**

Why is the friend dividing by 4? To match the original, each rotation must be a minimum of 90º.
*December 13, 2013*

**Statistics (?)**

What is your question?
*December 12, 2013*

**Statistics**

SEm = SD/√n From this equation, you can see why it is false.
*December 12, 2013*

**Math help,plz :(**

What specific sort of info are you seeking?
*December 12, 2013*

**Math help,plz :(**

Convert all the dimensions of the room to whatever scale you are using.
*December 12, 2013*

**Sentence Agreement Errors**

subject/verb agreement error "One… were…."
*December 12, 2013*

**Science (?)**

What terms?
*December 12, 2013*

**biology**

https://www.google.com/search?client=safari&rls=en&q=punnett+square+explained+for+kids&ie=UTF-8&oe=UTF-8
*December 12, 2013*

**English (?)**

What is your question?
*December 12, 2013*

**science**

Are you talking about a Punnett square? https://www.google.com/search?client=safari&rls=en&q=punnett+square&ie=UTF-8&oe=UTF-8
*December 12, 2013*

**Science**

I assume that you are referring to humans. Fertilization takes places when a sperm enters the ovum. If there is no fertilization, there is no zygote and no baby.
*December 12, 2013*

**Science (?)**

None listed.
*December 12, 2013*

**Statistics**

Using P ≤ .05, if the probability the results would occur by chance is P > .05, you would accept the null hypothesis. By using any level of significance, if it equals or is less than that level, you would be assuming that the results indicate significant differences. ...
*December 12, 2013*

**Statistics**

The sample size reduces variability of distribution of means as it gets larger, but does not effect the expected value for the sample mean.
*December 11, 2013*

**Science**

Since this is not my area of expertise, I searched Google under the key words "meiosis and genetic variability" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=meiosis+and+genetic+variability&ie=UTF-8&oe=UTF-8 In the future, you ...
*December 11, 2013*

**Math (?)**

More data needed.
*December 11, 2013*

**science**

Since this is not my area of expertise, I searched Google under the key words "How does x ray radiation affect seed germination? " to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=How+does+x+ray+radiation+affect+seed+germination%3F...
*December 11, 2013*

**science help plzzzzzzzzzzzzzzz?**

Please only post your questions once. Repeating posts will not get a quicker response. In addition, it wastes our time looking over reposts that have already been answered in another post. Thank you. See your previous post.
*December 11, 2013*

**math**

$90 + $35(5) = ?
*December 11, 2013*

**Math**

Since all months have teens with 1s and twenties with 2s, they would be the most often. 0 occurs three times. How about the other numbers? Watch out for February.
*December 10, 2013*

**Logrythmic Math needs help**

Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
*December 10, 2013*

**Science**

Sounds good.
*December 10, 2013*

**Science**

When significant contradictory evidence is found.
*December 10, 2013*

**math**

$20 + .25m > $37 Solve for m.
*December 10, 2013*

**Science need help**

5 or if the experiment is replicated, 2 An independent variable is the potential stimulus or cause, usually directly manipulated by the experimenter, so it could also be called a manipulative variable. A dependent variable is the response or measure of results.
*December 10, 2013*

**statistics**

Victor or Junior, did you multiply my response to find the answer?
*December 9, 2013*

**statistics**

You have a lot of unnecessary data given to answer your question. .25 * 135 = ?
*December 9, 2013*

**Geometry**

A cube would have the least surface area. How well would a cube fit on our shelves?
*December 9, 2013*

**Psychology**

Albert Ellis’ ABC Theory A. Activating Experiences — usually some frustration B. Beliefs — what we think about the activating experiences, which mediates the experiences to determine the consequences. Problems are likely to be exaggerated if we 1. Ignore the ...
*December 9, 2013*

**STATS2**

B http://en.wikipedia.org/wiki/Policy_analysis
*December 9, 2013*

**math (?)**

What are the statements?
*December 9, 2013*

**STATS**

Please only post your questions once. Repeating posts will not get a quicker response. In addition, it wastes our time looking over reposts that have already been answered in another post. Thank you.
*December 9, 2013*

**algebra (?)**

All what?
*December 9, 2013*

**Religion needs help**

Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
*December 9, 2013*

**statistics**

Arranged in order of value as you have them, with 20 scores, between the 17th and 18th scores would be the 90th percentile (defining the top 10%). Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the ...
*December 8, 2013*

**math**

It would not make any difference how they arranged them in terms of age. Each swimmer would still have to swim 100m.
*December 8, 2013*

**Psychological Statistics**

What research situations have you chosen? IQ compared to GPA? (r = ?) IQ compared to letter grade in a particular course? (X^2 = ?) I'll leave the rationals up to you.
*December 8, 2013*

**science gr.8**

We do not do your homework for you. Although it might take more effort to do the work on your own, you will profit more from your effort. We will be happy to evaluate your work though.
*December 8, 2013*

**Statistics**

1.00 - .49 - .25 = ?
*December 8, 2013*

**science**

Since this is not my area of expertise, I searched Google under the key words "compare and contrast uplift and subsidence" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=compare+and+contrast+uplift+and+subsidence&ie=UTF-8&oe=UTF-8...
*December 8, 2013*

**Statistics**

Z = (score-mean)/SD You need the values of the mean and standard deviation. Unless you are dealing with a distribution of means, n does not matter.
*December 8, 2013*

**math (?)**

Each swimmer is supposed to swim 100m in one stroke. Given "4 by 100," is one swimmer going to swim two laps? Where is the fourth swimmer? What method are you using to break "up the distance of 400 meters by age"? The youngest gets to swim 200 meters? Each ...
*December 8, 2013*

**Math**

I didn't see any answers. Please only post once. Repeating posts or asking for help in another post will not get a quicker response. In addition, it wastes our time looking over reposts that have already been answered in another post. Thank you.
*December 8, 2013*

**Math**

100 + 5 Equilateral means equal sides.
*December 8, 2013*

**Buisness Math (?)**

No matrices posted.
*December 8, 2013*

**BIOLOGY**

https://www.google.com/search?client=safari&rls=en&q=darwin+lamarck+comparison&ie=UTF-8&oe=UTF-8
*December 7, 2013*

**BIOLOGY**

Since this is not my area of expertise, I searched Google under the key words "plant animal differences" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=plant+animal+differences&ie=UTF-8&oe=UTF-8 In the future, you can find the ...
*December 7, 2013*

**BIOLOGY (?)**

What problem are you considering?
*December 7, 2013*

**BIOLOGY (?)**

What hypothesis are you considering?
*December 7, 2013*

**BIOLOGY**

A control group is used to see if the same results would occur without the independent variable. An independent variable is the potential stimulus or cause, usually directly manipulated by the experimenter, so it could also be called a manipulative variable. A dependent ...
*December 7, 2013*

**BIOLOGY**

To start, see if it is plugged in the wall socket. Since this is not my area of expertise, I searched Google under the key words "repair electric fan troubleshoot" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=repair+electric+fan...
*December 7, 2013*

**Statistics**

Although you indicate n = 17, you only have 16 scores listed. Find the mean first = sum of scores/number of scores Subtract each of the scores from the mean and square each difference. Find the sum of these squares. Divide that by the number of scores to get variance. Standard...
*December 7, 2013*

**Math**

From the way you have defined the problem, you cannot satisfy both criteria in one spin, unless they indicate the same number. 2, 4, 6, and 8 are multiples of 2. 4 = 2 * 2, so 2 is a factor of 4. 2 is one of the 8 alternatives = 1/8
*December 7, 2013*

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