Monday

October 20, 2014

October 20, 2014

Total # Posts: 18,474

**statistics**

Right, this is descriptive statistics, not inferential. http://sociology.about.com/od/Statistics/a/Descriptive-inferential-statistics.htm
*January 7, 2014*

**maths**

4 * 3 = 12 27 * 16 = 432 Divide both numerator and denominator by 12.
*January 7, 2014*

**science... PLEASE HELP!**

Since this is not my area of expertise, I searched Google under the key words "Archaebacteria" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=Archaebacteria&ie=UTF-8&oe=UTF-8 In the future, you can find the information you desire ...
*January 6, 2014*

**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 related to the Z scores. Or you can go to http://davidmlane.com/hyperstat/z_table.html
*January 6, 2014*

**statistics**

Assuming that your square is a negative sign, it would be true.
*January 6, 2014*

**math**

I can't decipher your diagram. If the rectangle is 8 by 20, the perimeter = 2(8) + 2(20) = ?
*January 5, 2014*

**science**

Since this was not my area of expertise, I hesitated to answer. Are you assuming that they are both rotating in the same direction? However, my assumption is that, since the sizes of the planets are different, the same side would NOT always be seen from the earth.
*January 5, 2014*

**Health (Ms. Sue)**

Although I am not Ms.Sue, good answers, but get rid of the question marks at the end of your answers. "…which consist of body parts…."
*January 4, 2014*

**Biology**

Although this is not my area of expertise, I assume it is because our metabolism slows down.
*January 4, 2014*

**Math**

If you post specific problems, if is very likely.
*January 3, 2014*

**statistics**

Agree, ± 68% of the time.
*January 3, 2014*

**statistics**

True, ±3 SD < range.
*January 3, 2014*

**math**

An inequality is treated just like an equation, except that multiplying/dividing by a negative value reverses the carat (< to >). Post your answers, and we will be happy to respond to them.
*January 3, 2014*

**college algebra**

We can't do it on these posts.
*January 2, 2014*

**college algebra (?)**

We cannot see the figures on these posts.
*January 2, 2014*

**Maths**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. A. .3 * .4 = ? B. .7 * .3 = ?
*January 2, 2014*

**psychology**

Please do not use all caps. Not only is it harder to read, but it is like SHOUTING online. Thank you. Also, it would help if you proofread your questions before you posted them.
*January 2, 2014*

**statistics**

True
*January 1, 2014*

**Health (Ms. Sue)**

Additional Information. http://drdavespsychologypage.homestead.com/AIDS___Teenagers.pdf
*January 1, 2014*

**science**

http://en.wikipedia.org/wiki/Amnesia
*January 1, 2014*

**statistics**

Plus or minus a standard error of the mean (SEm) encompasses approximately 68% of the probable scores. SEm = SD/√n
*December 31, 2013*

**statistics**

When you find the sum of the squares, divide that by the number of scores to get variance.
*December 31, 2013*

**statistics**

Don't agree.
*December 29, 2013*

**statistics**

The critical region CR, or rejection region RR, is a set of values of the test statistic for which the null hypothesis is rejected in a hypothesis test. That is, the sample space for the test statistic is partitioned into two regions; one region (the critical region) will lead...
*December 29, 2013*

**Science**

Yes, that is the only behavior listed.
*December 27, 2013*

**Science**

Agree.
*December 27, 2013*

**Statistics**

Without further data, I would say mode. Eye color would only be a nominal scale. http://drdavespsychologypage.homestead.com/Two___Two_____four.pdf
*December 25, 2013*

**Psy.**

C http://drdavespsychologypage.homestead.com/Good_Vs__Evil.pdf
*December 24, 2013*

**math**

http://www.youtube.com/watch?v=wRttEDsPQ-g
*December 23, 2013*

**biology**

Notice that my address is "Psy," which stands for psychology. Since this is not my area of expertise, I searched Google under the key words "carbon cycle" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=carbon+cycle&ie=...
*December 23, 2013*

**language art(1 question)**

I disagree.
*December 23, 2013*

**biology**

"speed of solving math problems" = "how fast math problems can be solved" Why is "OR" in caps? 5. "...See if the experimental group solved math problems significantly more rapidly than the control group." There may be a difference, but ...
*December 23, 2013*

**Psychology**

http://drdavespsychologypage.homestead.com/Reinforcement__Controlling_Behavior.pdf http://drdavespsychologypage.homestead.com/Reinforcement__Random.pdf Be aware that even mere attention can be a reinforcer.
*December 22, 2013*

**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*

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