Tuesday
August 4, 2015

Posts by PsyDAG


Total # Posts: 20,072

science
It depends on the results of the experiment. Are the results statistically significant or not? What are your null and alternate hypotheses?
April 15, 2015

Science
I am assuming you are starting from "your house." No rounding required. 270 - 24 = ?
April 15, 2015

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 (.0401) and its Z score. Insert values in above equation to get SD.
April 15, 2015

math
OR… just in case your computer crashes, you could use this equation: 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. For d...
April 15, 2015

6th Grade Math
Sounds good as far as you went, but expensive. However, part of the input is also selecting the number. Make sure the output includes the lemonade coming down the slot, not just remaining in the machine.
April 15, 2015

math
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 20/100 * 19/99 * (98-18)/98 * (97-18)/97 * (96-18)/96 = ?
April 15, 2015

Math
.90 * .80 = ?
April 15, 2015

math
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. A. .6 * (1-.8) = ? C. .6 * .8 = ? Use similar processes for B and D.
April 15, 2015

Stats
Ho: M = T Ha: M > T (one-tailed) I do not want to do an F-test to find out if the SDs are equal. 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 ...
April 15, 2015

math
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. Either-or probabilities are found by adding the individual probabilities. Since pr(crash|rain or snow) = .2 and pr(crash|cloudy ...
April 14, 2015

Math
C + D = 54 therefore C = 54-D 4C + 2D = 122 Substitute 54-D for C in the third equation and solve for D. Insert that value into the second equation to solve for C. Check by putting both values into the third equation.
April 14, 2015

Math
90km/hr = 55.92 mi/hour
April 14, 2015

Math
A. (9*15) - (3*7) = ? B. Answer to A * 8/12 to get topsOil volume.
April 14, 2015

math
Agree.
April 14, 2015

mathematics
4ab(b+2-4a)
April 14, 2015

Mathematics
-5m^2
April 14, 2015

Math
6'5" = 5'17" 5'17" - 2'7" = 3'10"
April 14, 2015

Math
Convert 7 yds, 1' to 6 yds, 4', then subtract. Multiply yards by 3.
April 14, 2015

Science
Cannot draw graphs on these posts.
April 14, 2015

geometry
Cannot draw on these posts.
April 14, 2015

biology
agree.
April 13, 2015

Statistics
You have 9 possibilities. Divide that into the number of possibilities without chocolate.
April 13, 2015

Math
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. A. 7/9 * 2/(9-1) = ? B. 2/9 * (2-1)/9-1) = ? C. Use similar processes for this question.
April 13, 2015

Simple math
Assuming that the cubes are numbered 1-6, probability is zero. 5 + 0 = 5
April 13, 2015

Pre - CALCULUS
2y - x = 5 x = 2y-5 Online "^" is used to indicate an exponent, e.g., x^2 = x squared. x^2 + y^2 - 25 = 0 Substitute 2y-5 for x in the third equation and solve for y. Insert that value into the second equation to solve for x. Check by putting both values into the ...
April 13, 2015

Kelly
Academic goals are the majors or degrees that you seek, while career goals are the jobs you seek. Academic majors can often lead to a wide variety of jobs.
April 13, 2015

Pre Algebra Probability
5! = 5 factorial = 5*4*3*2*1 = 120
April 13, 2015

math
What diagram? Cannot copy and paste here.
April 13, 2015

BUS 303 HUMAN RESOURCES MANAGEMENT
Also, please do not use all capitals. Online it is like SHOUTING. Not only is it rude, but it is harder to understand. Thank you.
April 13, 2015

Algebra 8th grade
Online "^" is used to indicate an exponent, e.g., x^2 = x squared. What is your question? Factor? (y^2 -3y) = y(y-3)
April 13, 2015

genetics
Also, to be statistically relevant, you need larger samples.
April 13, 2015

English
Right.
April 13, 2015

math
1.
April 13, 2015

Math: stats
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 "...
April 12, 2015

Math
What diagram? Cannot copy and paste here.
April 12, 2015

maths
Cannot draw or model here. c. Volume = 30 * 15 * 10 = ? Divide volume by 6 to get number of boxes per carton.
April 12, 2015

math
Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. r = 1/2d V = π r^2 h = π (4.3*10^-2)^2 * .44 = ? π = 3.14 Take it from here.
April 12, 2015

math
What is your question?
April 12, 2015

math
Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. (6*10^9)/(2*10^6) = 3*10^3 6/2 = 3
April 12, 2015

ALGEBRA
Lacking data.
April 12, 2015

Science
What image? Cannot copy and paste here.
April 12, 2015

Math Help
Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. 1/5 = .2 1/5 * 13,500 = 2,700 Either divide 13,500 by 5 or multiply by .2
April 12, 2015

leal aspects of health information
Since this is not my area of expertise, I searched Google under the key words "fraudulent billing types" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=fraudulent+billing+types&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you can ...
April 12, 2015

Math
1/20 - 1/40 = 1/40
April 12, 2015

Maths
(1- .83)x = 1870 Solve for x.
April 12, 2015

Math
No diagram. Cannot copy and paste here.
April 12, 2015

statistics
Do not have calculator. (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 ...
April 11, 2015

Statistics
"Studded"? What were their gender scores before segregation?
April 11, 2015

Statistics
See later post, but use ±.05 for Z score.
April 11, 2015

math
two-dimensional, months vs. rainfall
April 11, 2015

math
Total degrees = 360º 2+4+6+8 = 20 Divide 360º by 20, then multiply by various ratios.
April 11, 2015

math
W * L = 40 L = 40 - W 2L + 2W = 26 Substitute 40-W for L in the third equation and solve for W. Insert that value into the first equation to solve for L. Check by putting both values into the second equation. For the last question, try halving one of the dimensions.
April 11, 2015

Math
You are welcome.
April 10, 2015

Math
(3.75+.5)(2+.5) - (3.75*2) = m^2 for border. Multiply that answer by $20.
April 10, 2015

maths
What is your question?
April 10, 2015

statistics
A only indicates studying 2 out of the seven days.
April 10, 2015

statistics
Agree.
April 10, 2015

psych
Disagree.
April 10, 2015

statistics
Assuming that the margin of 4.0% is for the depositors, at 1.0% depositors = 8 ± 4, while for 3.0%, depositors = 36 ± 4. Is my assumption valid? If so, I disagree.
April 10, 2015

statistics
Does the nurse know who is in which group? If so, B is correct.
April 10, 2015

biology
To maintain a balance, you have to sense imbalance, so you can return to the homeostatic state.
April 10, 2015

English
agree.
April 9, 2015

science
Since this is not my area of expertise, I searched Google under the key words "biotic and abiotic composition" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=biotic+and+abiotic+composition&ie=UTF-8&oe=UTF-8&gws_rd=ssl#rls=en&q=...
April 9, 2015

math
x ≥ 3 2x ≥ 6 etc….
April 9, 2015

Math
L = 2W-5 L * W = 88 Substitute 2W-5 for L in the second equation and solve for W. Insert that value into the first equation to solve for L. Check by putting both values into the second equation.
April 9, 2015

math
Isn't that what I indicated?
April 9, 2015

math
Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. 12 * 3/4 is right.
April 9, 2015

math
Right.
April 9, 2015

math
Supplementary angles add up to 180º.
April 9, 2015

algebra
464 - 215 - 89 + 31 = ?
April 9, 2015

Algebra
6. x + 3x + 54º = 180º 11. x + 3x = 112 Solve for x.
April 9, 2015

Psychology
Although I know the theories, I have little or no knowledge of celebrity couples.
April 9, 2015

statistics
What criterion are you using to compare? If the distribution is relatively normal: 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 between score and mean ...
April 8, 2015

Science
With your limited data, I would assume that there are no left-handed persons in her lineage.
April 8, 2015

Math
What letters? You cannot copy and paste here.
April 8, 2015

Math
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 3/6 * 2/4 = ?
April 8, 2015

Biology
Since this is not my area of expertise, I searched Google under the key words "roles restriction enzymes play in transformation" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=roles+restriction+enzymes+play+in+transformation&ie=...
April 8, 2015

Statistic
Need to know some measure of variability.
April 8, 2015

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.
April 8, 2015

science.......
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.
April 7, 2015

math
Online "^" is used to indicate an exponent, e.g., x^2 = x squared. y = 2x^2 y will have the same value whether the same x value is positive or negative.
April 7, 2015

Math
100s =12000 Solve for s.
April 7, 2015

psychology
I searched Google under the key words "psychoanalysis tenets" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=psychoanalysis+tenets&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you can find the information you desire more quickly, ...
April 6, 2015

Statistics
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. For 99%, use ±.005. 95% = mean ± Z SEm SEm = SD/√n
April 5, 2015

statistics
What is your question?
April 4, 2015

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 later post.
April 4, 2015

Music
Since this is not my area of expertise, I searched Google under the key words "how to compose music" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=how+to+compose+music&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you can find the ...
April 4, 2015

project child care
Not unless you post the information.
April 3, 2015

child development
Your choice is split-half reliability.
April 3, 2015

age question
24 + x = 3x Solve for x.
April 3, 2015

variation
What is your question?
April 2, 2015

math
x+ y = 33 x + 3y = 81 Subtract first equation from second. 2y = 48 Take it from here.
April 2, 2015

math please help
No diagram, so we don't have any idea about F. You cannot copy and paste here.
April 2, 2015

fluids
Since this is not my area of expertise, I searched Google under the key words "benefits of a fluid system" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=benefits+of+a+fluid+system&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you ...
April 1, 2015

math (urgent)
It would help if you proofread your questions before you posted them. Is 20,000 missing a zero, or does 140,000 have an extra zero?
April 1, 2015

Algebra 2
A percentile is a measure used indicating the value below which a given percentage of observations in a group of observations fall. Arrange in order of value, lowest to highest. Third value = 30th percentile.
April 1, 2015

Math
315/1901 = ?
April 1, 2015

prob. & stat.
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 15/24 * 15/24 = ?
April 1, 2015

Algebra Please Help
if x = 0, then y = 0^2 + (-3) = 0^2 - 3 = ? Do the same with the other x values.
April 1, 2015

Algebra Please Help
Substitute the x values in the equation and solve to find values of y.
April 1, 2015

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