Wednesday
September 2, 2015

Posts by PsyDAG


Total # Posts: 20,146

Math Check
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. < 30 = 1-29 29/40 * (29-1)/(40-1) ≠ 9/16
April 28, 2015

math
What is your question? A square has 4 sides.
April 28, 2015

BIO HELP PLEASE!!!
It depends on the type of infection. For example, with HIV, none would be infected.
April 27, 2015

Algebra
3C + 4M = 12.50 3C + 2M = 8.50 Subtract the second equation from the first and solve.
April 27, 2015

math
Substitute 18-q for n in the second equation and solve for q. Insert that value into the first equation to solve for n. Check by putting both values into the second equation.
April 27, 2015

math
What equations?
April 27, 2015

algebra
When multiplying/dividing, exponents are added/subtracted respectively. 8 - (-5) = ?
April 27, 2015

English
Disagree.
April 27, 2015

psychology
I would say D.
April 27, 2015

Statistics
Probability of getting either one or two good batteries. Either-or probabilities are found by adding the individual probabilities. If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual ...
April 26, 2015

math
For a square, Length squared = area or Length = √area
April 26, 2015

Statistics
Out of 36 possibilities, you could get: 6, 3 3, 6 4, 5 5, 4
April 25, 2015

statistics
Since you say "distribution of IQ scores is NOT normally distributed," bell-shaped graphical does not represent it. Therefore, cannot make estimates. If it was normal, mean = mode = median.
April 25, 2015

geometry
With 45º on one side, the other angle would be 180º-90º-45º = 45º Altitude = base = 4 Use Pythagorean theorem. 4^2 + 4^2 = b^2
April 25, 2015

statistics
Calculate mean. Z = (score-mean)/SEm = (25-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. Would you consider that ...
April 24, 2015

Psychology
1) E 2) B
April 24, 2015

Math, Statistics
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (.40) and the related Z scores. Or you could use this source: http://davidmlane.com/hyperstat/z_table.html
April 24, 2015

MATH
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 you later post.
April 24, 2015

Math
No graph. You cannot copy and paste here.
April 24, 2015

Needs Excel help
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
April 24, 2015

Statistics
I assume you want the value of x. mean = ∑x/n 10 = (4+x+1+2+5)/5 Solve for x.
April 23, 2015

Psychology 202
If you mean achieving higher status in occupations, I would say true.
April 23, 2015

statistics
They are inversely related.
April 23, 2015

Statistics
I assume you are only concerned with the apples being too big to fit in the box. Ho: mean = 4.1 Ha: mean > 4.1 Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (.05) and its ...
April 23, 2015

Math
C = 2πr = 18π 90π/18π = ?
April 22, 2015

Life science
Use a Punnett square. https://www.google.com/search?client=safari&rls=en&q=punnett+square&ie=UTF-8&oe=UTF-8&gws_rd=ssl
April 22, 2015

Lumuka secondary school
Assuming that you have a school counselor, have him/her give you interest tests to help clarify job preferences.
April 22, 2015

Statistics
a) Z = (score-mean)/SD b, c) 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 proportions/probabilities related to the Z scores.
April 22, 2015

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. Ho: mean = 520 Ha: mean > 520 Find the mean first = sum of...
April 22, 2015

Statistics
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (.40) and its Z score. -Z = (score-mean)/SD = (10,000-mean)/500
April 22, 2015

Statistics
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (.02) and its Z score.
April 22, 2015

Statistics
Is Alisha also Anonymous? If so, see your later post. 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 22, 2015

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. Ha: µ < 30 Z = (score-mean)/SEm SEm = SD/√n
April 22, 2015

Maths
Since this is not my area of expertise, I searched Google under the key words "inventor of simultaneous equations" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=inventor+of+simultaneous+equations&ie=UTF-8&oe=UTF-8&gws_rd=ssl In ...
April 21, 2015

genetics
Since this is not my area of expertise, I searched Google under the key words "genetic eye color" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=genetic+eye+color&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you can find the ...
April 21, 2015

genetics
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 21, 2015

math
Data missing.
April 20, 2015

math
5º + 6º + 0º = ?º
April 20, 2015

film
What special effects do you want to create?
April 20, 2015

Physics needs help
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
April 20, 2015

HELP please
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. Indicate your specific subject in the "School Subject" box, so ...
April 20, 2015

help please? :( math
Online "^" is used to indicate an exponent, e.g., x^2 = x squared. agree.
April 20, 2015

math please help 8th grade
If you only have one equation, how can you compare slopes?
April 20, 2015

Math
let x = glass capacity 6(5x) + 12x = 21 Solve for x.
April 20, 2015

math
(1-3/5)x = 50 Solve for x.
April 20, 2015

Stats
Where is the data? I'll start it for you. 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 = ...
April 19, 2015

stats
Cannot construct bar graph here. For each airline, calculate total times, then total on time and total delayed. Divide latter two by total times to get %. Draw bars.
April 19, 2015

math needs help
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
April 19, 2015

maths
(13/5-12/7)/(-31/7*-1/2) + (-2/3-1/3) = (91/35-60/35)/(31/14) + (-1) = (31/35)/(31/14) - 1 = ?
April 19, 2015

math
65/12 - 32/12 = 33/12 65/12 + 32/12 = 97/12 (97/12)/(33/12) = ?
April 19, 2015

Science
How much does the average female weigh? Are you talking about pressure standing or on the ball of the foot or the heel while walking/running?
April 19, 2015

statistics
Ho: mean = 16 oz Ha: mean ≠ 16 oz
April 18, 2015

Math
What are the values for r, t and y?
April 18, 2015

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 ...
April 18, 2015

statistics
Agree.
April 18, 2015

statistics
Are you really looking for the "ratio of red/black"? Since the red cards are greater than the black cards, you have a ratio of red to black > 1. If it is black to read, then 6/14 = 3/7 I would disagree.
April 18, 2015

statistics
2x + 8 = 20 2x = 12 x = 6 red/black = 14/6 Repeat for second deal.
April 18, 2015

Science
How high was the object? 100 feet? one foot?
April 17, 2015

Algebra
No "following." Cannot copy and paste here. friction between tires and road?
April 17, 2015

Help with Psychology
No. Google each term.
April 17, 2015

algebra
y = 9x
April 17, 2015

statistics
Are you Jane and/or Paul? 211/812 = ?
April 17, 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 17, 2015

math
a. 12/total = ? b. 7/total = ? c. (10+16)/total = ?
April 16, 2015

MATH
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. 95% = mean ± Z SEm SEm = SD/√n
April 16, 2015

Math help needed
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
April 16, 2015

Math
3,456/(6*4) = ?
April 16, 2015

Math
Unclear. Scatter plots not measured in terms of Z scores. Scatter plot and histogram are two different types of statistical representations.
April 16, 2015

Biology
Right... plus 22 others, if human.
April 16, 2015

statistics
(total - 1676)/total = ?
April 16, 2015

STATS HELP
What rule? Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (.08A, .08+.20>C) and related Z scores. Insert in equation below to find raw score. Z = (score-mean)/SD
April 16, 2015

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.
April 16, 2015

SCIENTIFIC NOTATION
5 * 3.2 = 16 When multiplying, add exponents. -7 + 12 = 5 16 * 10^5 Convert.
April 15, 2015

Literature needs help
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
April 15, 2015

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

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