Saturday

January 31, 2015

January 31, 2015

Total # Posts: 19,121

**statistics**

92,000 - 12,500 = 79,500 79,500/8 = 9,937.5 Have each interval 10,000 and start just below 12,500.
*October 13, 2014*

**Math**

What is your question?
*October 13, 2014*

**Statistics and Probability**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 1/51 * 1/50 * 1/49 * 1/15 = ?
*October 13, 2014*

**Math**

1. x + y > 5 2. x > 1 3. 200x + 100y < 700 Cannot graph here.
*October 13, 2014*

**statistics**

Z = (score-mean)/SD Since I don't know the mean or SD, I can't help you find the raw score. Also, your values don't make sense. Do you mean: Z = 11.22 and Z = 20.48? If so, those are extremely deviant values. If not, you need to clarify your data.
*October 12, 2014*

**Algebra 2**

15 + .40m = 30 + .25m Calculate m. Once you find m, insert its value on either side to answer the last question.
*October 11, 2014*

**Biology**

Since this is not my area of expertise, I searched Google under the key words "contractions in digestive system" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=contractions+in+digestive+system&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the ...
*October 11, 2014*

**statistics**

Assuming a normal distribution, if the mean (m) = 50, no value of standard deviation (s) would make 55 a measure of central tendency. If the distribution is skewed, s has no definite meaning. However, the mode or median could be 55.
*October 11, 2014*

**statistics**

I thought I answered this previously. If the Z scores are equal, he did equally well on both exams.
*October 11, 2014*

**statistics**

It depends on the mind set of the participants in each group. If they see themselves competing against other groups, they will do their best to help each other. However, if they view themselves as competing with others within the group, there may be sabotage or at least a lack...
*October 11, 2014*

**statistics**

a) 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 b) Z = (score-mean)/SD...
*October 11, 2014*

**statistics**

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (.25) in the smallest area for the Z score.
*October 11, 2014*

**statistics**

If the Z scores are the same, he did the same on both.
*October 10, 2014*

**Science**

Right.
*October 10, 2014*

**word problem math b**

km = 1000m 20,000 m/80 minutes = 250m/minute
*October 10, 2014*

**equation**

a+b : (2a +2b) = a+b : 2(a + b) = 1 : 2
*October 10, 2014*

**Help Ms.Sue**

Multiply by 12. 12/4 : 12/3 : 12(13/12) = 3 : 4 : 13
*October 10, 2014*

**Pre algebra**

1296 = 16 t^2 Divide both sides by 16. 81 = t^2 Get square root of both sides.
*October 10, 2014*

**Algebra**

Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. What is your question? 5/2 ≠ 46/3 Second equation is correct.
*October 10, 2014*

**Biology**

Since this is not my area of expertise, I searched Google under the key words "homeostasis in cells" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=homeostasis+in+cells&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you can find the ...
*October 10, 2014*

**Statistics**

What is your question?
*October 10, 2014*

**Nominal Data Be skewed?**

You are correct; they cannot be skewed. http://drdavespsychologypage.homestead.com/Two___Two_____four.pdf
*October 10, 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 (.05) and its Z score. Put values into above equation and solve for raw score.
*October 9, 2014*

**Math**

Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. 2,724 * 588 = 1,601, 712 3000 * 600 = 1,800,000
*October 9, 2014*

**Math**

I get 10.84 * 10^24 = 1.084 * 10^25 A and D are the same, except for the notation.
*October 9, 2014*

**Math**

$25 - $18 = $7 still owed. $7 + $18 = $25
*October 9, 2014*

**Math**

No, which has the higher power of 10?
*October 9, 2014*

**Math**

Yes.
*October 9, 2014*

**Science**

Yes.
*October 9, 2014*

**Algebra 2**

Lacking data.
*October 9, 2014*

**math!**

x = W 2x = L x-3 = H H * L * H = volume
*October 9, 2014*

**Math Need Help. No Idea how to solve**

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (.025) and its Z score. 95% = mean ± Z SEm SEm = SD/√n
*October 8, 2014*

**Sociology (Statistics) Confidence Level**

95% = mean ± 1.96 SEm SEm = SD/√n = 1/√35 = 1/5.92 = .17 .17 * 1.96 = .33 95% = mean ± 1.96 SEm = 3 ± .33 = 2.67-3.33 Rounding error?
*October 8, 2014*

**statistics**

Parameters are data on total populations, while statistics are data on portions of a population (samples).
*October 8, 2014*

**statistics**

From your data, he did equally well on both exams.
*October 8, 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. Second equation has wrong SD.
*October 8, 2014*

**MATH (STATS)**

A) SEm = SD/√n B) 95% = mean ± 1.96 SEm C) Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (.005) and its Z score. Substitute that for the 1.96 in B equation.
*October 8, 2014*

**Algebra**

What problem?
*October 8, 2014*

**statistics**

22 is two SD below the mean, in other words, Z = -2. 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 and distance from the mean. ...
*October 8, 2014*

**Statistics-Help please??**

Was this the equation they gave you? Z = (score-mean)/SD Just insert values and solve for Z.
*October 8, 2014*

**statistics**

What is your question?
*October 8, 2014*

**Sociology (stats) help**

Continue calculations to find Z. Z = (score-mean)/SD Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the least proportion/probability for each Z score. Either-or probabilities are found by adding the ...
*October 8, 2014*

**Psychological Statistics**

Z = (score-mean)/SD Insert you data to calculate the mean.
*October 8, 2014*

**General Psychology**

Nicotine
*October 8, 2014*

**psychology**

http://drdavespsychologypage.homestead.com/Decision_Trap.pdf
*October 7, 2014*

**psychology**

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.
*October 7, 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 later post.
*October 7, 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.
*October 7, 2014*

**Science**

I would agree.
*October 7, 2014*

**Satistics**

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 (.10) and its Z score. Insert all data in above equation.
*October 7, 2014*

**statistics**

Z = (score-mean)/SD Compare the two Z scores.
*October 7, 2014*

**Stats**

Probability cannot be negative or greater than 1.
*October 7, 2014*

**math**

What are your choices?
*October 7, 2014*

**science**

https://www.google.com/search?client=safari&rls=en&q=speed+of+a+falling+object&ie=UTF-8&oe=UTF-8&gws_rd=ssl
*October 4, 2014*

**Algebra**

x^2 + 4x - 10 = 0 Ten factors into 2 and 5. If you had a typo: x^2 + 3x - 10 = 0 This factors into (x+5)(x-2) = 0 Do you have a typo?
*October 4, 2014*

**statistics**

.01/3 = ?
*October 4, 2014*

**statistics**

Where? Grade book?
*October 4, 2014*

**Math**

Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. Yes, -7 * -7 * -7 * -7 * -7
*October 4, 2014*

**math**

1000 - 310 - 180 = B
*October 4, 2014*

**Statistic**

What figure? What is your question?
*October 3, 2014*

**Math**

x - .32x = 120 Solve for x.
*October 3, 2014*

**Math**

Horizontal axis (X axis, abscissa) is the values of the scores, while the vertical axis (Y axis, ordinate) would indicate the frequency of each score. I hope this helps.
*October 2, 2014*

**Biology**

https://www.google.com/search?client=safari&rls=en&q=protein+synthesis+importance&ie=UTF-8&oe=UTF-8&gws_rd=ssl 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/.
*October 2, 2014*

**Biology**

https://www.google.com/search?client=safari&rls=en&q=product+of+the+oxidation+of+methanol&ie=UTF-8&oe=UTF-8&gws_rd=ssl 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/...
*October 2, 2014*

**statistics**

Unbiased estimators can be generalized more accurately.
*October 2, 2014*

**writing,essay**

How do you know who you are without knowledge of your past? How do you define yourself? Think about it.
*October 2, 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.
*October 2, 2014*

**math**

120/5 units by 75/5 units
*October 1, 2014*

**math**

Any negative number squared is positive. (-x)^4 = (-x)^2 * (-x)^2 If a is -(x^4), then it is negative. The only other negative I see is e.
*October 1, 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. https://www.google.com/search?client=safari&rls=en&q=factors+affecting+...
*October 1, 2014*

**Stat**

99% = mean ± Z*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 (.005) and its Z score. Insert Z score with other data in the first equation.
*October 1, 2014*

**Statistics**

From the way you posted, I cannot understand your data. However…. 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 for each Z score.
*October 1, 2014*

**Health**

Agree, however, it does effect the adrenal glands via ACTH, Adrenocorticotropic hormone.
*October 1, 2014*

**statistics**

Then you have a bimodal distribution; use both modes.
*October 1, 2014*

**Science**

https://www.google.com/search?client=safari&rls=en&q=science+indicators&ie=UTF-8&oe=UTF-8&gws_rd=ssl
*October 1, 2014*

**Math**

Need to convert meters to feet. 4m = 13.12 feet She has two rolls. 2 * 13.12 = 26.24 She needs the amount below to connect the speakers. 2*2 + 2*11 = ? Convert discrepancy from feet to cm. 1 foot = 30.48 cm
*October 1, 2014*

**Science quick question**

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 other post.
*September 30, 2014*

**Math**

0 is the X value (abscissa, horizontal axis) and -2 is the Y value (ordinate, vertical axis).
*September 30, 2014*

**Math**

(180º-116º)/2 = ?
*September 30, 2014*

**science**

1 Knot = .5144 m/sec
*September 30, 2014*

**Stat**

Right.
*September 30, 2014*

**Stat**

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (.005) and its Z score. 99% = mean ± Z SEm SEm = SD/√n
*September 30, 2014*

**Communication**

1-2. Agree 3. Disagree. Look up definition of prototype. 4. Agree 5. DK for sure, but would go with your answer. 6. Would go more with A 7. Disagree, when you marry someone are you biologically related? 8. Don't avoid conflicts. This would lead to long-term unexpressed ...
*September 30, 2014*

**Human and social biology**

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 29, 2014*

**computers**

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, to start you out, have you ever typed a paper on a manual/electric typewriter as ...
*September 29, 2014*

**MATH HELP**

Is there a 5 in the tens digit space?
*September 29, 2014*

**Algebra**

let x = # marbles in bag. 3x + 2 = 29 Solve for x.
*September 29, 2014*

**Math**

42 = 8x - 14 Add 14 to both sides, then divide both sides by 8.
*September 29, 2014*

**math**

lack sufficient data.
*September 29, 2014*

**Logic?**

Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. Correct.
*September 29, 2014*

**Algebra 1**

From your data: 1/2 + 1/4 = 3/4 3/4x = 16 Multiply both sides by 4/3.
*September 29, 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 (.07) and its Z score. Insert Z score in equation above to find raw score.
*September 29, 2014*

**discrete distribution**

No data given. 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
*September 28, 2014*

**algebra**

Insufficient data.
*September 28, 2014*

**public speaking**

No choices listed.
*September 28, 2014*

**statistics (Bill)**

First, if you 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. I would want the one with the lowest variability. SD is a measure of ...
*September 28, 2014*

**statistics (Tom)**

What is your question?
*September 28, 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 (.10) and its Z score. Insert Z score and other relevant data in equation above to find the raw score.
*September 28, 2014*

**stats**

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 start for you. a) 15/total cubes = ? b) (total cubes-15)/total cubes = ? ...
*September 28, 2014*

**stat**

No, it changes the odds of picking a spade. If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 13/52 * (13-1)/(52-1) = ?
*September 28, 2014*

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