Thursday
April 24, 2014

Posts by PsyDAG


Total # Posts: 17,540

Medical law needs help
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.

algebra (incomplete)
Lacking needed data.

algebra
Either-or probabilities are found by adding the individual probabilities. 1/2 + 1/2 = 1

statistics
About 68% of scores will be between 67-83 (±1 SD), 95% between 59-91 (± 2 SD), 99% between 51-99 (±3 SD).

math
.8(2300) - 250 = ? .2(2300) + 250 = ?

Statistics
For any normal distribution, about 68% lie between ± 1 SD.

psy/315
I searched Google under the key words "comparison distribution hypothesis testing" to get these possible sources: http://www.google.com/search?client=safari&rls=en&q=Comparison+distribution+hypothesis+testing&ie=UTF-8&oe=UTF-8 In the future, you can find the informat...

Spanish
What is the context for each of these words? If the person being described is feminine, the o endings would change to a.

Math
If the license tags are not included as taxes: 860/11595 = ? If the tags are included as taxes: (860+95)/11595 = ?

ststistics
Statistics is a branch of math used to summarize data and test hypotheses.

stats
If you are testing for significant differences: 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 s...

Psychology
It depends on how you define normal behavior. I searched Google under the key words "definitions of normal behavior" to get these possible sources: http://www.google.com/search?client=safari&rls=en&q=definition+of+normal+behavior+in+psychology&ie=UTF-8&oe=UTF-8 In th...

statistics
99% = mean ± 2.575 SEm SEm = SD/√n

statistics
Within each month, there is more variation in terms of the daily temps.

math
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. Assuming equal amount of odd and even numbers, the probability of getting one odd number is .5.

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 previous post.

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 previous post.

science
http://www.gobookee.net/publication-manual-of-the-apa-6th-edition/

Science
How would you like us to help?

science
Standardization would allow more effective interpretation of the information given.

science
Since these are only nominal scale data, a bar diagram with content on X-axis and frequency on Y-axis would be good.

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.

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.

Geometry
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. Use the Pythagorean theorem: x^2 + x^2 = 8^2 Solve for x.

graduate 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.

graduate statistics
Use same process as indicated in your following post.

graduate 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.

PSY/315
For median (b), arrange scores in order of value. Median = 50th percentile = point where half the scores are valued above and half below. (a) Mean = sum of scores/number of scores Subtract each of the scores from the mean and square each difference. Find the sum of these squar...

Geology (?)
What type of rock are you seeking? Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.

Psychology
The prefrontal lobe of the cortex is a decision maker. It has my vote.

math
10º - 2ºh = -8º Solve for h.

Math
Using your formula: $6000 * .07(8) = ? However, after the first year, the principal is 6000 + .07(6000) = $6420, so the second year's interest = $6420 * .07(6420) = ? You need to revise your formula.

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 (.95) and its Z score. Insert Z score into top equation to calculate score.

psy
Schemas

Math
.4 * 50 = 20 20 + 20^2 + 20^3 + 20^4 = ?

Math
If one above a certain number is 3 under another, the difference is 4.

psy/315
Arrange scores in order of value and tally the frequency of each score for the frequency table. 0 = 5 1 = ? 2 = ? 3 = ? 4 = ? 5 = ? 6 = ? 9 = ? We cannot reproduce a histogram here. However, even the frequency table should give you an idea of the relative shape (normal, positi...

Stats
Right.

statistics
7! = "seven factorial" = 7*6*5*4*3*2*1 = ?

math
SEm = SD/√n The larger the sample n, the smaller the SEm.

math
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. Do you consider that probability extreme?

Math
Your hundredths digit cannot be greater than 9. If thousandths digit = x, then tenths digit = 2x. x + 2x = 9 --> .693 x + 2x = 6 --> ? x + 2x = 3 --> ?

Statistics
1000.9 seconds = 16.68 minutes a. They are all on the mean. b. Distribution is extremely skewed. c. SD = √variance, but it is only an accurate estimate of variability for a normal distribution.

kaplan (incomplete)
No chart. Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.

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

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

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

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

statistics
There is a lot of variability in the losses. 68% lost between $25 and $375. Below Z = -1.2, 11.51% lost nothing.

reproduction
Actually the woman's body does reject the sperm, that is one of the reasons why, of the millions of sperm in the ejaculate, only a few reach the ovum.

Math
Sorry that I missed the difference in units. 10.5 inches = 26.67 cm.

Math
If your data are correct, I don't see anything you are doing wrong.

psychology
Anxiety attack or panic attack.

Psychology
Not smoke, maintain/develop social contacts, have goals to attain, stimulate mind would be some others. http://drdavespsychologypage.intuitwebsites.com/Aging_Successfully.htm Don't just copy the material. Express the ideas in your own words. Although this will take more ti...

statistics & probability
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. (1-.30)^8 = ?

public speaking
A communicator, an receptive audience and some medium of communication (oral, written, etc.).

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 ...

math
Gender and ethnicity rare only nominal scales, so they are eliminated. http://drdavespsychologypage.intuitwebsites.com/Two___Two_____four.pdf Others might depend on the type of organization you are discussing. Salaries are likely to be positively skewed (pulled out to the righ...

Statistics
99% = mean ± 2.575 SEm SEm = SD/√n I'll let you do the calculations.

statistics
The only indication you have for the mean is what?

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.

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.

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 last post.

math 4th grade (?)
What is your question?

Psychology
Several things need to be considered. How strongly do they hold these values? Are their "stated religious beliefs" internalized? In other words, are they their own values or are they just repeating what they have been taught? Do they believe that one taboo behavior n...

statistics (incomplete)
What is your question?

Science
Are the roots still there to hold the soil?

math
If 18 like both, then (30-18) like just chocolate and (25-18) like vanilla. 50 - 18 - 12 - 7 = ?

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 I'll let you do the c...

Math
If 1/4 inch = 1 foot, then one side would be 60 times 1/4 inch and the other would be 28 times 1/4 inch.

math
From your data, either 876 or 976.

statistic of behavioral science
Z = (score-mean)/SD Which test has the highest Z score?

math stats
Before you have gathered any data, these would be your hypotheses. Ho: p1 = p2 Ha: p1 ≠ p2

Math
.08($5,900) = ?

statistics
a. Customer bills b. 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. c. 95% = mean ± 1.96 SD d. Calculate Z score and proport...

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 "area...

statistics
If P ≤ your critical value, you would reject the null hypothesis.

Psychology
http://drdavespsychologypage.intuitwebsites.com/Person_Perception__East_vs__West.pdf Don't just copy the material. Express the ideas in your own words. Although this will take more time and effort, you will learn more.

math help (?)
Need to be accompanied by the original problem.

math check
Your answers to both problems are wrong. I am assuming your n is the 20 jars from the second question. SEm = SD/√n = 9/√20 = 9/4.47 = ? Z = (score-mean)/SEm Find table in the back of your statistics text labeled something like "areas under normal distribution&...

Math
b) mean = median = mode. See definition of median. e) Z = (score-mean)/SD for raw scores. Answer wrong. Z = (score-mean)/SEm for means. Answer wrong. SEm = SD/√n = 4.6/√25 = 4.6/5 = .92 f) Use same process. Use Table indicated in later post.

statistics (incomplete)
Probability must always be one or less. Need more and accurate data.

math
Matched groups?

Statistics
Assuming a normal distribution: Z = (score-mean)/SEm SEm = SD/√n = 500/√100 = 500/10 = 50 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.

Statistics
With this data, best estimate = 23.

biology (?)
Even if we knew what you were talking about, we have no access to whatever diagram you are seeking.

math
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. a) .3^2 * .7^3 = ? b) Same as 1, 2 or 3 people agreeing. for one: .3 * .7^4 = ? for two: see above for three: .3^3 * .7^2 = ? Ei...

math
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.

Math
Looks fine to me.

math (incomplete)
no sets given.

math check
If the values are in the tens of thousands of dollars, how do you get a total value of $35.60?

Psychology
I am not completely sure about this, but it looks like the best answer.

MATH HELP
2) SEm = SD/√n e) Z = (score-mean)/SEm 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.

Psychology
Agree

Psychology
Try again

Psychology
Do not agree.

Psychology
Agree

Psychology
Agree

Psychology
Agree.

statistics
Z = (score-mean)/SEm SEm = SD/√n I'll let you do the calculations.

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