Tuesday
October 21, 2014

Posts by PsyDAG


Total # Posts: 18,505

Health insurance (?)
What is your question?
May 30, 2014

Statistic
To do the calculations yourself for 3 and 4: Range = highest score - lowest 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 ...
May 30, 2014

Algebra
-9 -3 + 9 - 7 = -10
May 30, 2014

Algebra
Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. (-5)(-8) - (6*6) = 40 - 36 = 4
May 30, 2014

Algebra/I think I did this wrong
Z = (score-mean)/SD = (180-170)/5 = 2 a. Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability between score and mean for Z score. Multiply by 50 ≠ 29 b. Z = (176-170)/5 = 6/5...
May 30, 2014

Simplify Polynomials
Don't know about "7ft1". Combine like terms. -2x^2 + x + 3
May 30, 2014

Algebra 2
What are your formulas?
May 30, 2014

bio
Is the PKU gene represented by P or p? If the latter, C is correct for the last statement. Cannot respond to first two questions, because parental genotypes are not given.
May 30, 2014

Algebra 2
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.
May 29, 2014

statistics
https://www.google.com/search?client=safari&rls=en&q=confidence+intervals+inferential+statistics&ie=UTF-8&oe=UTF-8
May 29, 2014

Math
Can't draw a picture here, but 16 posts will be needed. Remember that the corner posts will each be used for two sides.
May 29, 2014

math needs help
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
May 29, 2014

Law
Since this is not my area of expertise, I searched Google under the key words "James Fyfe deadly force" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=James+Fyfe+deadly+force&ie=UTF-8&oe=UTF-8 In the future, you can find the ...
May 29, 2014

statistics
Assuming the sample size is the same, r^2 accounts for the amount of variability explained by r. r^2 = .04 r^2 = .16
May 29, 2014

math (?)
Data missing.
May 29, 2014

math
L = 3W - 40 L * W = 6400 (3W-40) * W = 6400 Solve for W, then L.
May 29, 2014

statistics (oops)
Sorry, mode should be less than 90.
May 29, 2014

statistics
I'm not sure what you are asking. It would help if you proofread your questions before you posted them. Positively skewed? Mode should be greater than 100.
May 29, 2014

Science
Your text must be defining B or the numbers. We do not have that data.
May 29, 2014

math
1500 * .21 = ?
May 28, 2014

Psy 270
Do you want to be a psychologist? If so, what area of psychology interests you? To give some ideas of applications ink one's personal life, this source might help: http://drdavespsychologypage.homestead.com/Line-on-Life-Articles-.html
May 28, 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.
May 27, 2014

science (?)
No servings indicated.
May 27, 2014

statistics
With only 13 employees, it would be best to use X^2 (Chi-square) test. Ho: no diference 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 ...
May 27, 2014

Math
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.
May 27, 2014

science (CHECK plz)
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.
May 26, 2014

science (check!)
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.
May 26, 2014

algebra
Multiply out. 2x +20
May 26, 2014

sci207
Since this is not my area of expertise, I searched Google under the key words "water temperature affecting weather" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=water+temperature+effecting+weather&ie=UTF-8&oe=UTF-8 In the future...
May 26, 2014

math
1. 2(2/5) + 1/2 = 4/5 + 1/2 = .8 + .5 = 1.3 = 1 3/10 2. Using the information above, you should be able to do this one yourself.
May 25, 2014

Psychology
Possibly this article might help: http://drdavespsychologypage.homestead.com/Memory__What_Memory_.pdf
May 25, 2014

statistics
It would help if you proofread your questions before you posted them. You only have one value for the young. The independent variable is age, but it would be better if you more specifically defined the age ranges. I hope this helps.
May 25, 2014

Technology
Since this is not my area of expertise, I searched Google under the key words "sepia examples" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=sepia+examples&ie=UTF-8&oe=UTF-8 In the future, you can find the information you desire ...
May 24, 2014

statistics
You start with a null hypothesis and an alternative hypothesis. You decide what probability you will use to reject your null hypothesis, in other words what is statistically significant. That is also your type I error, the probability of rejecting your null hypothesis, when it...
May 24, 2014

Simple Biology
I am worried whether the majority is only 51% as vs. something like 95%. Besides, how could you test it?
May 24, 2014

Technology
See your later post.
May 24, 2014

please help bio
Since he only has one X chromosome, the allele must be for normal color vision.
May 24, 2014

Statistics
Z = (mean1 - mean2)/standard error (SE) of difference between means SEdiff = √(SEmean1^2 + SEmean2^2) SEm = SD/√n (n = 25) 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 &...
May 24, 2014

science
motor or efferent
May 23, 2014

science
Since this is not my area of expertise, I searched Google under the key words "nerve nets" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=nerve+nets&ie=UTF-8&oe=UTF-8 In the future, you can find the information you desire more ...
May 23, 2014

arithmetic
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.
May 23, 2014

math (?)
Insufficient data. How large is the paper and/or the strips?
May 23, 2014

Math
7 61/1000
May 23, 2014

Bar Graphs
Your preference.
May 23, 2014

Math--2question
Area = 4 π r^2 Volume = 4/3 π r^3
May 23, 2014

math
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. Unclear. 37.8/103 = .36699 OR Online "^" is used to indicate and exponent, e.g., x^2 = x squared. 37.8/(10^3) = 37.8/1000 = .0378
May 23, 2014

maths
.21/12 = .0175 per tablet 1.50/100 = .015 per tablet (.0175-.015) * 12 = ?
May 23, 2014

math
.375 * (1- 2/3) = ? Change to percentage.
May 23, 2014

Algebra (?)
What is your question?
May 23, 2014

Maths
Profit for each = sales price - cost of production and sales.
May 23, 2014

Statistics (?)
No distribution shown.
May 23, 2014

Statistics
Have cells indicating satisfied/dissatisfied for each group. Calculate column, row and grand totals. 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...
May 23, 2014

Algebra II
Z = (score-mean)/SD Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportions/probabilities related to the Z scores.
May 23, 2014

algebra/ Can see I am right
So far so good, but what about the 241 letter arrangements not allowed?
May 22, 2014

I need to know how to work this Maths Problem
Frist of all, you don't have an equation. Equations have equal signs (=). If you don't know how to find a square root, there might be a table in your textbook. Assuming you haves no typos: -2√62+38 = -2(7.874) + 38 = -15.748 +38 = 22.252 38 - 2√62 ≠ 2...
May 22, 2014

Science--check my answers.
1. Agree 2. Disagree 3. Agree 4. Agree 5. Agree 6. Disagree
May 21, 2014

BIOLOGY please help
Since this is not my area of expertise, I searched Google under the key words "somatic cell division" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=somatic+cell+division&ie=UTF-8&oe=UTF-8 In the future, you can find the ...
May 21, 2014

Math
Yes, that would add to give you the smallest prime p.
May 21, 2014

Science
Antibodies?
May 21, 2014

Algebra
10 * 9 * 8 * 7 = ?
May 21, 2014

Math (?)
There are several. What are your choices?
May 21, 2014

math
Since you didn't ask your question, I assume you want the total. 12 + 11 + 10 + 9 + 8 + 7 + 6 + 5 = ?
May 21, 2014

statistics (?)
Unable to predict with no more data. I don't even know what a math score of 30 signifies. Do you have choices?
May 21, 2014

Maths
So girls make up 1/3 of group, while boys make up 2/3. 1/3 *40 = 13. 3 rounded to 13 40 - 13 = 27 Do you have typos?
May 21, 2014

Math
Since this is subtraction, older person does not go "on top." Calculate number of days from May 17 thru December 31, then add 365( 2002-1987), then add days from Jan. 1 through October 28.
May 20, 2014

Not Math
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.
May 20, 2014

Math
5 - 2.25 ≥ 2.75
May 20, 2014

Pre Algebra
B, theoretical P(5) one roll = 1/6
May 20, 2014

math
a ≤ 12
May 20, 2014

HELP PLEASE !!
1. Disagree, are they arguing that they are not trapped? 2. See no indication of bursting through door; Mom doesn't sound worried. 3. If Tina is worried about drowning, what does that suggest? 4. Which would include the neighborhood?
May 20, 2014

biology
Look on most diagrams of the eye. Rods and cones Cornea and lens optic nerve
May 20, 2014

statistics
8 * .2 = 1.6 rounded to 2 are married and supervisors. 2/140 = ?
May 20, 2014

maths (?)
Cannot graph here and data is lacking.
May 19, 2014

Algebra 1--Please, help me!
(x-2)(x+2) = 780 x^2 - 4 = 780 x^2 = 784 Solve for x, then x+2 and x-2.
May 19, 2014

algebra1
No
May 19, 2014

Science
Since West is the direction the skates are heading, I would go with 3.
May 19, 2014

Science
I would agree.
May 19, 2014

Algebra 2
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 I'll let you do the ...
May 19, 2014

biology help
Cone
May 19, 2014

science help
agree.
May 19, 2014

math
32, when omitted leaves the median = (29+35)/2 = 32.
May 19, 2014

Science
I am unaware of how the direction of travel solely effects friction. What other factors are being considered?
May 19, 2014

Science
The atrium receives the blood, sends it to the ventricle, which pumps it to the body.
May 19, 2014

ALGEBRA
Multiply each by 1.06 to find total cost of each camera. Arrange in order of value. Middle-most score = median The mean = sum of scores/number of scores. Mode = most frequently occurring score. Range = highest score - lowest score. I'll let you do the calculations.
May 19, 2014

statistics
95% = mean ± 1.96 SEm SEm = SD/√n I'll let you calculate and come to your own conclusions.
May 19, 2014

Math help
It would help if you proofread your questions before you posted them. The last term has an exponent sign (^) with no value. Secondly, to evaluate your answer, you need to use parentheses () to better define your terms.
May 18, 2014

math
rectangular.
May 18, 2014

math
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 1/6 * 1/6 = ?
May 18, 2014

Human Biology please help
Hypothalamus?
May 18, 2014

Math
5 black + 10 yellow = 2/3total Are you sure you don't have a typo?
May 18, 2014

Statistics
Definitely experimental, the doctors are not observing what is being done.
May 17, 2014

Statistics
Me too.
May 16, 2014

science (?)
None following. You cannot copy and paste here.
May 15, 2014

research paper
How about the old song title, "Smoke Gets in Your Eyes"?
May 15, 2014

math
I agree.
May 15, 2014

science
Since this is not my area of expertise, I searched Google under the key words "lineage bears" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=lineage+bears&ie=UTF-8&oe=UTF-8 In the future, you can find the information you desire ...
May 15, 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 proportions/probabilities related to the Z scores.
May 15, 2014

aLGEBRA
Multiply everything by 12x. 15 + 7x = 4 - 2x Transpose. 9x = -11 x = -11/9
May 14, 2014

Statistics
Start with a correlation coefficient.
May 14, 2014

math
With this limited data, best estimate = 30/50 = ?
May 14, 2014

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