Tuesday

October 21, 2014

October 21, 2014

Total # Posts: 18,505

**behavioral statistics**

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportions/probabilities to compare their Z scores (the most common type of standard score).
*February 25, 2014*

**Math**

(2*6+3)^2 > 175 15^2 > 175 225 > 175
*February 25, 2014*

**Statistics**

Don't have a TI-84 calculator, but.... 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 (.80) related to a Z score. Insert that value into the above ...
*February 25, 2014*

**math**

2 1/3x = 7/3x = 15 x = 6.43 .43 * 7/3 = ?
*February 25, 2014*

**math**

5x = beads in necklace 5x + x = 192 Solve for x, then 5x.
*February 25, 2014*

**math**

14 - 9 = ?
*February 25, 2014*

**probability**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. (1-.4)(1-.8)(1-.6) = ?
*February 25, 2014*

**Statistics**

It is 99%, sorry for the typo.
*February 25, 2014*

**Statistics**

95% = mean ± 2.575 SEm SEm = SD/√n I'll let you do the calculations.
*February 25, 2014*

**Science Please HELP!!!**

X-chromsome Now are you reedy for the real thing rather than just practice?
*February 24, 2014*

**Genetics**

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.
*February 24, 2014*

**ela**

Google each term. In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search. Also see http://hanlib.sou.edu/searchtools/.
*February 24, 2014*

**business communication (?)**

Do you have alternatives to choose from? You cannot copy and paste here. Having typos (as you have in your subject listing) indicates lack of attention to detail.
*February 24, 2014*

**math**

19/5 = x/1.5 Solve for x.
*February 24, 2014*

**math**

9.5/2 = x/14 Solve for x.
*February 24, 2014*

**Math**

6'4" = 76" 1" = 2.54 cm 76" * 2.54 = ?
*February 24, 2014*

**Psychology**

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 searched Google under the key words "power assertion psychology" to get...
*February 24, 2014*

**vocab (?)**

It would help if you included the context for these terms.
*February 24, 2014*

**Science**

How could you throw a ball, "if inertia didn’t exist?"
*February 24, 2014*

**psy220**

Not knowing what your question is, I searched Google under the key words "American pursuit of happiness" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=American+pusuit+of+happiness&ie=UTF-8&oe=UTF-8#q=American%20pursuit%20of%...
*February 24, 2014*

**AP style (?)**

What is the context? For example, if it is North Central College, it would not be hyphenated.
*February 23, 2014*

**Statistics (?)**

What blanks? Z = (score-mean)/SD T = 50 + 10Z
*February 23, 2014*

**statistics**

95% = mean ± 2 SD 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 ...
*February 23, 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.
*February 23, 2014*

**math (?)**

We cannot see your diagram, and you cannot copy and paste it. https://www.google.com/search?client=safari&rls=en&q=right+acute+and+obtuse+angles&ie=UTF-8&oe=UTF-8
*February 23, 2014*

**Probability**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 1/3 * 1/3 = ?
*February 23, 2014*

**Statistics**

Either-or probabilities are found by adding the individual probabilities. Since three face cards are already spades, delete them for the face card probability. 9/52 + 13/52 = ?
*February 22, 2014*

**Probability**

Right!
*February 22, 2014*

**Probability**

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.
*February 22, 2014*

**rutgers**

With your data, you don't, unless you meant ∑(mean-x)^2 = 238 You have to 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 ...
*February 22, 2014*

**math**

33.60/4 *1000 = ?
*February 22, 2014*

**statistics**

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. Find table in the back of your statistics text labeled something like "...
*February 22, 2014*

**A Peculiar Question**

It is a learned method of relating to others. If it inconsistent over situations and persons, it can be considered an aspect of one's personality. However, whatever is learned can be unlearned… assuming that the person wants to unlearn it.
*February 21, 2014*

**Algebra 1**

The latter. Exponents are added when multiplying terms.
*February 21, 2014*

**math**

(11,000-8690)/11,000 = ?
*February 21, 2014*

**Bio 20**

Although this is not my major area of expertise, I would say D. For the same volume of water, a thin hose has more pressure than a larger one.
*February 21, 2014*

**Science**

Since this is not my area of expertise, I searched Google under the key words "brain lobes fetal pig" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=brain+lobes+fetal+pig&ie=UTF-8&oe=UTF-8 In the future, you can find the ...
*February 21, 2014*

**statistics**

µ = 30 Variance for distribution of means = (SD/√n)^2 = ?
*February 20, 2014*

**Science**

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.
*February 20, 2014*

**math**

I assume you mean 3/8 = 7/(x+1). Multiply both sides by x+1. 3/8x + 3/8 = 7 Subtract 3/8 from both sides. 3/8x = 6 5/8 = 53/8 Multiply both sides by 8/3. x = 53/8 * 8/3 = ?
*February 20, 2014*

**Probability**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 1. .2 * (1-.3) = ? Either-or probabilities are found by adding the individual probabilities. 2. (.2 *3.) + (.8 *.3) = ?
*February 20, 2014*

**Science**

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 last post.
*February 20, 2014*

**Science**

I agree.
*February 20, 2014*

**algebra**

Ah, better! l2xl > 16 x > ± 8
*February 20, 2014*

**algebra**

It would help if you proofread your questions before you posted them. There is no inequality given. An inequality requires either a < or > symbol.
*February 20, 2014*

**maths**

It would help if you proofread your questions before you posted them. Hard to know if the space denotes a comma or period or something else. 55,010 - 899 = 54, 111
*February 20, 2014*

**STATS**

To make a prediction, it doesn't matter which variable is measured on the abscissa.
*February 20, 2014*

**Biology**

Is SW USA a polar Region? I live in the SW… A.
*February 20, 2014*

**BIOLOGY**

Availability of food and vulnerability to predators. Natural mutations might make changes in phenotypes that help in dealing with the two factors above. Those would then tend to reproduce.
*February 19, 2014*

**Middle School Math Help Please**

Juice started out as a whole glass (1). Water = 1/6 + 1/3 + 1/2 = ?
*February 19, 2014*

**Algebra**

w = 30 - y 9.95w + 13.50y = 337.55 Substitute 30-y for w in second equation and solve for y. Insert that value into the first equation and solve for w. Check by inserting both values into the second equation.
*February 19, 2014*

**Math**

Subtract one equation from the other to eliminate the y. 11x = -11 Solve for x then y.
*February 19, 2014*

**algebra**

I don't understand why 100x is negative. Wouldn't commission for sales be positive? If he sells no computers, x = 0.
*February 19, 2014*

**Statistics**

See previous post.
*February 19, 2014*

**Statistics**

If you are comparing two means, you need to have the SEm, which requires knowledge of n. You do not supply that value. 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 ...
*February 19, 2014*

**Science**

Since this is not my area of expertise, I searched Google under the key words "thymus size fetal pig" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=thymus+size+fetal+pig&ie=UTF-8&oe=UTF-8 In the future, you can find the ...
*February 19, 2014*

**Socials**

Since this is not my area of expertise, I searched Google under the key words "Kamloops biome" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=Kamloops+biome&ie=UTF-8&oe=UTF-8 In the future, you can find the information you desire ...
*February 18, 2014*

**Math**

each set? With replacement, the probability for red remains 6/15 = 2/5 If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events.
*February 18, 2014*

**Statistics**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. .8 * (1-.6) = .32
*February 18, 2014*

**Statistics (?)**

More data is needed for us to provide help.
*February 18, 2014*

**stastistics**

http://en.wikipedia.org/wiki/Student's_t-test
*February 18, 2014*

**algebra (?)**

No answers followed. Cannot copy and paste here.
*February 18, 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 score. If the events are independent, the probability of both/all events occurring is ...
*February 18, 2014*

**statistics**

Expect the µ's to stay the same. The standard error of the mean (SEm) = SD/√n SEm would tend to get smaller as n increases.
*February 18, 2014*

**Algebra 1**

f = 2s + 6 s + f = 24 Substitute 2s+6 for s in second equation and solve for s. Insert that value into the first equation and solve for f. Check by inserting both values into the second equation.
*February 17, 2014*

**Math**

We cannot draw on these posts.
*February 17, 2014*

**Chemistry needs help**

Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
*February 17, 2014*

**science**

Also, please do not use all caps. Not only is it harder to read, but it is like SHOUTING online. Thank you.
*February 17, 2014*

**Science**

I agree.
*February 17, 2014*

**stats (?)**

since you cannot copy and paste, we do not have the ANOVA. Even if we did, what is you question?
*February 17, 2014*

**Math**

Multiply top equation by 3 and then add the equations. 3x + 6y = 15 -3x + 6y = 15 12y = 30 You can take it from this point.
*February 17, 2014*

**math (second Anon.)**

First, if you are a different anonymous and have a question, it is much better to put it in as a separate post in <Post a New Question> rather than attaching it to a previous question, where it is more likely to be overlooked. Second, we do not do your homework for you. ...
*February 17, 2014*

**math (first Anon.) (?)**

Choices not given. You cannot copy and paste here.
*February 17, 2014*

**math**

Since this is not my area of expertise, I searched Google under the key words "business math to evaluate investments" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=business+math+to+evaluate+investments&ie=UTF-8&oe=UTF-8 In the ...
*February 17, 2014*

**biology**

Since this is not my area of expertise, I searched Google under the key words "hypertonic" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=hypertonic&ie=UTF-8&oe=UTF-8 In the future, you can find the information you desire more ...
*February 17, 2014*

**biology**

See your later post.
*February 16, 2014*

**math (?)**

You have two unknowns. Without more data, it cannot be solved.
*February 16, 2014*

**Chemistry needs help**

Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
*February 16, 2014*

**maths (?)**

Again you are unclear. Are you choosing from the selected cards or the remainder of the deck? If of the 7 cards removed, red card is 2/7. neither king nor queen = 5/7 I'll let you do the rest.
*February 16, 2014*

**maths**

I'm not sure what "it" refers to. As long as the choice is random, there are 15 odd cards of the 30. 15/30 = ?
*February 16, 2014*

**Statistics**

Sampling with replacement puts the chosen unit back in the pool, while without replacement does not. Probabilities remain the same with replacement, but both numerator and denominator are reduced by one in without replacement in subsequent choices.
*February 16, 2014*

**Math**

3s + 4j = 360 s + 3j = 220 Multiply second equation by 3, then subtract first from second. 3s + 9j = 660 5j = 300 Solve for j, then insert that value into either equation to find s.
*February 16, 2014*

**Ethics**

Intrinsic goods are valued in themselves rather than leading to some other goods. http://www.diffen.com/difference/Ethics_vs_Morals
*February 14, 2014*

**Math**

1.3-2.5x ≤ -1.2x-0.52 Add .52 and 2.5x to both sides. 1.3 + .52 ≤ -1.2x + 2.5x 1.82 ≤ 1.3x Divide both sides by 1.3. 1.4 ≤ x or x ≥ .14
*February 14, 2014*

**Statistics**

Why are you substituting 5 for =? 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 (.025 because it is two-tailed) and its Z score. Insert Z first as ...
*February 14, 2014*

**physics (?) needs help**

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=appropriate+outlet+box&ie=UTF-8&oe=UTF-8
*February 13, 2014*

**Math 7**

Cannot be solved unless you have some indication of relation of A or b to the height (20). A = 10b
*February 13, 2014*

**Math**

Change to common denominator (70). 35/70 + 40/70p > 91/70 40/70p > 56/70 p > 56/40
*February 13, 2014*

**math 3 (?)**

What is your question?
*February 13, 2014*

**Math**

You are more likely to get help, if you included specific problems from that unit.
*February 13, 2014*

**math**

Since half of the isosceles would a right triangle, use the Pythagorean theorem with 1/2 value of the base. 4^2 + altitude^2 = 5^2 Solve for the altitude.
*February 13, 2014*

**Statistics**

Need to ask questions first to get more details. Was the sample random? Was it large enough? Was the spread statistically significant? Was the way the question was stated biased?
*February 13, 2014*

**Statistics**

http://drdavespsychologypage.homestead.com/Odds__Figuring.pdf
*February 13, 2014*

**statistics for managers**

We have no knowledge of your departments.
*February 12, 2014*

**Algebra**

Let a and B represent the respective hours worked. 10A + 7.5B > 300
*February 12, 2014*

**algebra**

10x+25(x+2)+5*5(x+2)= 400 10x + 25x +50 + 25x + 50 = 400 55x = 300 x = 300/55 = 5.45 I found one mistake in you equation above (bold), but that still does come out right. Do you have any typos?
*February 12, 2014*

**english (?)**

No following words. Cannot copy and paste.
*February 12, 2014*

**algebra (?)**

You need to compete the problem. Cannot copy and paste.
*February 12, 2014*

**SCIENCE (?)**

What are your choices? person? free thinker?
*February 12, 2014*

**math**

Same process as previous post.
*February 11, 2014*

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