Thursday

December 18, 2014

December 18, 2014

Total # Posts: 18,863

**statistics**

What is your question?
*September 14, 2014*

**statistics**

Z = (score-mean)/SEm SEm = SD/√n 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.
*September 14, 2014*

**Algebra**

Yes
*September 14, 2014*

**Elementry Statistics**

Z = (score-mean)/SEm SEm = SD/√n (How large was the sample?) Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability of the Z score. Is it <.01?
*September 14, 2014*

**statistics**

(70 + 50)/2 = ?
*September 14, 2014*

**Statistics**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. (1/52)^12 = ?
*September 14, 2014*

**statistics**

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 later post.
*September 14, 2014*

**8th grade homework**

Square r. 66 = 1/3(3.14) 9 h Combine terms. 66 = 3 * 3.14h = 9.42h Divide both sides by 9.42. 7 = h
*September 14, 2014*

**math**

Right.
*September 14, 2014*

**Math**

First answer right. What is value of e? 1,000,000? Even so, what happened to the 7?
*September 14, 2014*

**Statistics**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. [(365-31)/365]^31 = ?
*September 14, 2014*

**Math!**

1) 19 + 5 (16) + 3(16) = 19 + 80 + 48 = 147 (agree) 2) y^3 + 3xy^2 + 2x +13 10x -8x = 2x 3) Right
*September 14, 2014*

**Statistics**

To equal 1, both numerator and denominator need to be the same value. Cannot do Venn diagram here.
*September 14, 2014*

**Science**

Since this is not my area of expertise, I searched Google under the key words "photosynthesis and respiration" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=photosynthesis+and+respiration&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the ...
*September 14, 2014*

**Stat**

Z = (score-mean)/SD Insert the values to calculate Z.
*September 14, 2014*

**Stat**

In a skewed distribution, the median is the most central of the measures of central tendency.
*September 14, 2014*

**statistics; emergency please help me**

Z = (mean1 - mean2)/standard error (SE) of difference between means SEdiff = √(SEmean1^2 + SEmean2^2) SEm = SD/√n If only one SEm is provided, you can use just that to determine SEdiff. Find table in the back of your statistics text labeled something like "...
*September 13, 2014*

**Science**

Sorry that I didn't respond to your answers. a. What is the independent variable? New drug treatment RIGHT b. What is the dependent variable? Fewer AIDS-related illnesses NOT JUST "FEWER" c. What control treatment should be used? The same amount of the drug ...
*September 13, 2014*

**Science**

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. Extraneous variables — other than the independent ...
*September 13, 2014*

**Science**

Since this is not my area of expertise, I searched Google under the key words "spectral broadening" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=spectral+broadening&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you can find the ...
*September 13, 2014*

**Algebra**

2x -21 = 2x - 21 agree
*September 13, 2014*

**Statistics**

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 deviation = square root of variance Z = (score-mean)/SD Find ...
*September 12, 2014*

**Statistics – First Q**

Z = -1 to Z = +1
*September 12, 2014*

**Algebra 3-4**

First Stage = x + 28, second = x x + 28 + x = 152 Solve for x, then x + 28.
*September 12, 2014*

**Statistics**

I'm not sure what CCIW means, but if it involves college freshmen, then I would agree.
*September 12, 2014*

**Statistics**

1, 2. Agree
*September 12, 2014*

**math**

What table?
*September 12, 2014*

**Math**

5/4.5 = 10/9 = x/60 Solve for x.
*September 12, 2014*

**Science**

1a. Correct 1b. Although you may be right, your data has no indication that different varieties of bean plants are being used. 2a. Right. 2b. wavelengths
*September 11, 2014*

**Poll**

Had rooms laminated, but were two boxes short while laminate was being installed. Had to look for matching laminates.
*September 11, 2014*

**statistics**

The greater your confidence level, the smaller your alpha level.
*September 11, 2014*

**science**

You are missing the value for L. 4.0 * 4.5 * L = V
*September 11, 2014*

**math**

What is your question?
*September 11, 2014*

**math**

659 is the number, but not how many blocks there are.
*September 11, 2014*

**Statistics**

Agree.
*September 11, 2014*

**Statistics**

1. Single blind gives the control group a placebo — a substance that is inert, it has no physical effect. Subjects don't know if they are in experimental or control group to reduce placebo effect, a change in behavior solely due to believing that you are getting the ...
*September 11, 2014*

**Statistics**

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. Extraneous variables — other than the independent ...
*September 11, 2014*

**statistics**

A. 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 score. B. Find table in the back of your statistics text labeled something like "...
*September 11, 2014*

**statistics**

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. However, I will give you a start. Find the mean first = sum of scores/number of scores ...
*September 11, 2014*

**statistics**

You are assuming that we are familiar with your acronyms. What are "tobt" and "tvc"?
*September 11, 2014*

**science**

overt aspects, explicit aspects, evident aspects?
*September 10, 2014*

**algebra**

L = 2W -3 2L + 2W = 144 Substitute 2W-3 for L and solve for W, then L.
*September 10, 2014*

**algebra**

Let x = short side, then 3x = each other side. x + 3x + 3x = 56 Solve for x, then 3x.
*September 10, 2014*

**biology**

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. Extraneous variables — other than the independent ...
*September 10, 2014*

**Math**

27 = 3 * 3 * 3 36 = 3 * 3 * 4 Now what do you do?
*September 10, 2014*

**math**

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.
*September 10, 2014*

**math 12**

It would help if you proofread your questions before you posted them. Very difficult to read.
*September 10, 2014*

**Math**

Fourteen point one minus w Z divided by 8, then minus 9
*September 10, 2014*

**Math**

√29 = 5.3852 5 2/3 = 5.67 5.67 > 5.3852
*September 10, 2014*

**statistics**

I'm not sure what you mean by "answers assertively." Number of individuals answering yes. 10 * 100 * .5 = ?
*September 10, 2014*

**algebra**

5D = Q D + 6 = N .05N + .10D + .25Q = 5.30 Substitute terms. .5(D+6) + .10D + .25(5D) = 5.30 Solve for D, then N and Q.
*September 9, 2014*

**Algebra**

What would lead to a product of -3? (1,-3 or -1,3) From the two end terms, what would add to -2? Since the first term has to be 1, the last term has to be -3 to = -2. Include the a and b terms. I hope this helps.
*September 9, 2014*

**living environment**

1) Right 2) Remember that some of the products are not necessarily drinkable, e.g., soap, oil.
*September 9, 2014*

**Algebra I**

10x - x^2 = 3x - 10 50 - 25 ≠ 15 - 10 You are right.
*September 9, 2014*

**Science!**

No, how does the oven gauge what level of heat to release?
*September 9, 2014*

**5th grade math**

What product? If a decimal, delete all the zeros after the last real number, e.g., 56.17000 = 56.17.
*September 9, 2014*

**math**

Have the vertical axis (ordinate) represent frequency and the horizontal axis (abscissa) represent score values. Find the range of marks, arrange score values from low on left to high on right. Depending on the number of students, your might want to group the values into ...
*September 9, 2014*

**Math**

100 = 10^2 Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. 5.97 * 10^23 * 10^2 = 5.97 * 10^25
*September 9, 2014*

**Math**

When divided by 5, to get a remainder of 4, the ones number must be either 4 or 9. Four is eliminated, because it is not odd. To sum to 10, the first number must be 1 --> 19.
*September 9, 2014*

**Math**

No. y + 2y = ?
*September 9, 2014*

**Math**

No, what happened to the w?
*September 9, 2014*

**Urgent Spanish Check**

Sí
*September 9, 2014*

**math**

Nothing shown.
*September 9, 2014*

**algebra**

A = 2S 2.25A + 1.75S = 1150 Substitute 2S for A and solve for S, then A.
*September 9, 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 calculated.
*September 9, 2014*

**math**

Are you talking about the median? https://www.google.com/search?client=safari&rls=en&q=calculating+median&ie=UTF-8&oe=UTF-8&gws_rd=ssl
*September 9, 2014*

**Statstics**

Median = 50th percentile
*September 9, 2014*

**stats**

What is your Question? SD = √variance
*September 9, 2014*

**statistics**

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (for two-tailed, .05 and .01) and get the respective Z scores. 90% = Mean ± Z(SD) 98% = mean ± Z(SD) ...
*September 8, 2014*

**Statistics**

Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. https://www.google.com/search?client=safari&rls=en&q=calculating+median&ie=UTF-8&oe=UTF-8&gws_rd=ssl#rls=en&q=calculating+correlation+...
*September 8, 2014*

**statistics**

It would help if you proofread your questions before you posted them. Does your "f" key not work well?
*September 8, 2014*

**algebra**

The memory used for a photo is variable. Also you don't indicate the total memory.
*September 8, 2014*

**Algebra**

Combine common terms. 2x^2 + 5x = 0 Factor. x(x+5) = 0 You should be able to take it from here. Check by inserting values found into the original equation.
*September 8, 2014*

**Biology please help!**

CO2 in the blood is the controlling factor for breathing rate.
*September 8, 2014*

**Biology**

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 later post.
*September 8, 2014*

**math**

5 * 10^-5 liter
*September 8, 2014*

**math**

Assuming the $15 is a one-time charge for the wet suit… 25h = 20h + 15 Solve for h.
*September 8, 2014*

**Math**

It depends on the distance. For a long distance, like Greyhound, the number of seats. For a shorter distance, like a intracity bus, the number of seats plus the room for standing.
*September 8, 2014*

**please check see if im correct**

Z = (mean1 - mean2)/standard error (SE) of difference between means SEdiff = √(SEmean1^2 + SEmean2^2) SEm = SD/√n If only one SD is provided, you can use just that to determine SEdiff. If you are using level of significance of P < .05, Z > 1.96.
*September 8, 2014*

**Biology - very urgent**

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 last post.
*September 8, 2014*

**Math**

What second column?
*September 8, 2014*

**Biology**

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.
*September 8, 2014*

**statistics**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 81/(729+81) * 350/(350+350) = ?
*September 8, 2014*

**geometry**

If they are labeled identically, wouldn't they be measuring the same thing? I would assume that they are not perpendicular, but identical. However, assuming a labeling typo, I would agree.
*September 8, 2014*

**SS**

Yes, but you might want to express it in distance units rather than time.
*September 8, 2014*

**Biology**

Welcome
*September 8, 2014*

**Biology**

Since you inhale oxygen and exhale carbon dioxide, I would agree with you.
*September 8, 2014*

**math**

11(1 - .03) = ?
*September 8, 2014*

**Science**

Doesn't that depend on your definition of "more"? In the desert, it probably would. However, once the plant becomes saturated, I don't think so.
*September 8, 2014*

**Speech**

Welcome
*September 8, 2014*

**Speech**

Title: Right to Life If your mothers were pro-abortion, how many of you would not be here? Even if you don't use these, they might help you to think of your own.
*September 8, 2014*

**Speech**

What is the purpose of your speech? Are you just providing information, or are you advocating a pro or con position?
*September 8, 2014*

**math**

Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. 1) 7.34 * 10^-8 2) I assume the dashes in front of your choices are not meant to be negative signs. 10^-3 = .001 10^-4 = .0001 10^-5 = .00001 That should help you to ...
*September 8, 2014*

**speech**

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. My response to your later post still applies.
*September 8, 2014*

**math**

.6 * $18 = ? (Where is this clothing store? I would love to go to that sale.)
*September 8, 2014*

**Statistics**

68% is between Z of 1 and -1. Insert values of Z and solve for the scores. Z = (score-mean)/SD
*September 8, 2014*

**statistics**

Do you have a random number table? Start at any point and use applicable three digit numbers.
*September 8, 2014*

**math**

We would have to know the decimal first. For example, .5 = "point five" or "one half"
*September 7, 2014*

**pseudocode**

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.
*September 7, 2014*

**biology**

You would want to say that there is no control group — one which receives neither extra water nor extra fertilizer. You can have more than one independent variable. An independent variable is the potential stimulus or cause, usually directly manipulated by the ...
*September 7, 2014*

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