Sunday
April 20, 2014

Posts by PsyDAG


Total # Posts: 17,499

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
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chemistry needs help
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physics needs help
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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.

stats
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 the Z scores. Multiply by 100 for percentages.

stats
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. In a normal distribution, mean = mode = median. What is the definition of median?

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 scores. Multiply probability by 100 to get percentage.

PSYCHOLOGY IN SOCIAL LIFE
http://drdavespsychologypage.intuitwebsites.com/Stress__A_Type_Personality.pdf

PSYCHOLOGY IN SOCIAL LIFE
Right

Statistics (incomplete)
More data needed.

Algebra 2..
112/grand total = ?

Statistics (partial)
"Standard deviation of the distribution of sample means" = SEm = SD/√n Since I don't use a calculator, I can't help you there.

statistics
The probabilities are based on a normal (not skewed) distribution. Calculations will be in error, depending on the degree of skewness.

general knowledge
As far as I know there is no "opening in the bottom of a soup dish," otherwise all the soup would leak out.

general knowledge
Without knowing the context, it is hard to define. Since this is not my area of expertise, I searched Google under the key words "intelligent skeleton" to get these possible sources: http://www.google.com/search?client=safari&rls=en&q=%22intelligent+skeleton%22&ie=UT...

maths
Combine the whole numbers and change the fractions to 30ths to solve.

maths
Change all to twelfths and solve. 10/12 + 6/12 - 9/12 = ?

Math help
a) 99.7% = mean ± 2.96 SEm SEm = SD/√n b) SEm = SD/√n c) See a.

math check
Since the score is below the mean, Z will be negative.

science (incomplete)
What "is shown"?

math
1% = .01 4/5 = 8/10 = .8 .8 of 1% = .008 20 1/4% = 20.25% To write as decimal, move decimal point two spaces to left and round.

science (incomplete)
We do not have the values.

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 (incomplete)
What are your choices? Z score of zero is on the mean. Does that help?

Statistics
In a normal distribution, mean = median = mode.

math
1. $40(40) + $45(18) = ? 2. 36,201 + 29,028 = ? 3. I don't know what "Php" means nor the costs of operating.

maths
With or without buttons, add 6 to both sides. 5x = 15 Divide both sides by 5.

math help
Does x = raw score or mean? If raw score: Z = (score-mean)/SD If mean: Z = (score-mean)/SEm SEm = SD/√n In both cases, find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability of Z.

math help
Between 40 and 52. Use process indicated in later post.

math check and help
a) correct b) SEm = SD/√n = 40/√46 = 40/6.7823 = 5.8977 = 5.90

Statistics
Use same process as previous post.

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 (.52) and its Z score. Insert in above equation and solve for score.

Finite Math
Not distribution. Without replacement, If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. first black ball = 4/6 second black ball = 3/5

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.

algebra (incomplete)
What graph?

algebra
An independent variable is the potential stimulus or cause. What fits?

math help
a) 90% = mean ± 1.645 SEm SEm = SD/√n b) 98% = mean ± 2.33 SEm

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

college algebra
1. 37.5 - 12 = ? 2. 9/5(85) + 32 = ? That is the conversion formula from centigrade/Celsius to fahrenheit.

Rounding
Unless there are typos, "164 to nearest hundredth"= 164.00.

PSY 369
Positive. Those who consistently watch violent porn are more likely to turn fantasy into reality. More violent porn stores mean that they must have customers to make sales profitable.

Statistics
A) Z = (score-mean)/SD B) Z = (score-mean)/SEm SEm = SD/√n For both, 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.

Quantative Method (?)
Need data.

Statistics help
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (.3989, .4875, .3628) related to your Z scores.

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