Saturday
December 20, 2014

Posts by PsyDAG


Total # Posts: 18,873

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

math
f(x) = 3x - 2 = 3(1.5) - 2 = ?
May 12, 2014

science
As indicated in your previous post, Google these concepts.
May 12, 2014

science
Since this is not my area of expertise, I searched Google under the key words "advantages disadvantages of diffusion in chemistry" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=advantages++disadvantages+of+diffusion+in+chemistry&...
May 12, 2014

life sciences
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.
May 12, 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. Multiply by 93.
May 12, 2014

science
If that happened, there was probably some trauma to the heart, so the organism would die.
May 12, 2014

Matth
16/(18+16+22) = ?
May 12, 2014

math
2.25/12 = ? 3.24/18 = ? The answers to the two equations should lead you to answer the 3 questions.
May 11, 2014

math (?)
It would help if you proofread your questions before you posted them. What is "one 25_ -pound bag"? I assume it is not one 25-pound bag. If it is: 15 * 25 = ?
May 11, 2014

math (?)
The information you need would vary, depending on the type of business decision you wanted to make. What decision concerns you?
May 10, 2014

Biology
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. Disagree with all except #2. 1. Food goes through small intestine before large. 3. What do you think the rocks are for? 4. Look up the ...
May 10, 2014

Ethics in Criminal Justice
Whenever you have rights and privileges, duties and responsibilities are also present, not only for the other but for one's self.
May 10, 2014

math
Assuming that a and b are both ≥ 1, A.
May 10, 2014

math
Looks like PQ is divided into thirds. What does that tell you?
May 10, 2014

math
(80-20)/80 = ? Change to %.
May 10, 2014

health
Get a coach.
May 9, 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 start you out. Find the mean first = sum of scores/number of scores. ...
May 9, 2014

brilient stars
(3-2) * 40 = ?
May 9, 2014

physical (?)
What is your question?
May 9, 2014

statistics (?)
No data. You cannot copy and paste here.
May 9, 2014

Science
https://www.google.com/search?client=safari&rls=en&q=Fr,+atomic+number+87&ie=UTF-8&oe=UTF-8
May 9, 2014

Biology
Since this is not my area of expertise, I searched Google under the key words "shade avoidance in auxin in plants" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=shade+avoidance+in+auxin+in+plants&ie=UTF-8&oe=UTF-8 In the future, ...
May 8, 2014

statistics (?)
Cannot tell what values go with what variables.
May 8, 2014

statistic
It would help if you proofread your questions before you posted them. P typically stand for probability, which cannot be greater than 1.
May 8, 2014

math
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) = ? I don't understand what you want in the last sentence.
May 8, 2014

statistics
A parameter is a value related to the total population, while statistic only relates to a sample, a portion of the population. That should help you to come to your own answers.
May 8, 2014

Algebra Help!!!
https://www.google.com/search?client=safari&rls=en&q=Graphing+Square+Root+Functions+on+Connexus&ie=UTF-8&oe=UTF-8
May 8, 2014

Math
250/(60)^2 = x/(96^2) Solve for x.
May 8, 2014

Math
Z = (score-mean)/SD Use your table or find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportions/probabilities of Z scores to the mean. Add.
May 8, 2014

math (?)
What is your question?
May 7, 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 "...
May 7, 2014

Science
Since this is not my area of expertise, I searched Google under the key words "physics force" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=physics+force&ie=UTF-8&oe=UTF-8 In the future, you can find the information you desire ...
May 7, 2014

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