# Posts by PsyDAG

Total # Posts: 23,426

Math
1-3. Wrong. Pay attention to ± signs. Did not go further.

Number problems
Starting with 12, go up the line with numbers that factor with 3 until you find one that sums to 1/3 the value. That's what I did to get the answer.

Psychology Stats and Research
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. I will start you out. State with your own notations. Ho: no difference H1: difference Z = (...

Psychology
An example of testing for the truth would be the validity scales of the MMPI. https://scholar.google.com/scholar?q=mmpi+validity+scales&hl=en&as_sdt=0&as_vis=1&oi=scholart&sa=X&ved=0ahUKEwi70PP18NHTAhXklFQKHV9QClkQgQMIKjAA

Algebra B (?)
Not sure of your notation. 4/?150 divided by ?189x?

math (?)
Divide it equally in terms of how many parts? Can pour from 5 liters into 3 liters to get 4 equal parts of 2 liters.

statistic
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 Use the previous process...

statistic
Use same process shown in previous post.

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 "areas under ...

Decision tool (?)
What data?

Science
They are both processes of cell division.

Math
If the median is from a larger population, then it can be true. If the median is just for the 10 students, then it cannot be true. The median is the 50th percentile.

Math
The mean serves as a fulcrum for the distribution, so it is affected by extreme scores in either direction. If they had a day in which they sold very many cameras, this would bias the mean. I would choose the median (50th percentile).

math (?)

math
Agree

maths variation
If this is in relation to a previous question, you need to restate that question.

Statistics (?)

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 scores.

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. Also, we do not have access to those studies. However, for (a) an experiment has: An ...

Biomechanics (?)
What do you need to solve?

Mrs Sue Math
Does D = d? 18d = -18 Take it from here.

maths
Variation? 15 sec = 1800m 15/1800 = x/648 Solve for x.

Biology
https://en.wikipedia.org/wiki/Punnett_square

Statistics
Do not understand "x~N(80,100)". 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.

Educational Tech
Agree

math
Let x = one number and x+7 the other. x + x + 7 = 31 Solve for x, then x+7.

math
18.45/3 = 6.15 195/6.15 = ?

A pronoun (I, me, he, she, herself, you, it, that, they, each, few, many, who, whoever, whose, someone, everybody, etc.) is a word that takes the place of a noun. In the sentence Joe saw Jill, and he waved at her, the pronouns he and her take the place of Joe and Jill, ...

Statistic
Arrange in order of value. It would range from the 4th ranked to the tenth.

Systems Analysis and Design
Cannot draw on these posts.

Math (?)
Regroup? 99 - 91 = 8

Statistics
99% = mean ± Z(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 (.005) and its Z score. Insert data into above equation.

statistics
a-c) Z = (score-mean)/SD Find table in the back of your statistics text labeled something like like "areas under normal distribution" to find the proportion/probability related to the Z scores. (d,e) Look up % in table to get Z score.

Scientific Method
How did he roll it? Did he give it a push or just let it roll by itself? If he just let it roll by itself, I don't detect any error, except that he might want to repeat the rolls many times, to make sure that the differences were not merely chance occurrences.

Test Wiseness
Please pass this on to that student. Advice to the exam-lorn ("test wiseness") I. Answer easy items first. If have to think about any question after reading for more than a minute, move on. A. Can get Qs you are sure of correct within the time limit. Spending too ...

Math
Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. 24,000 * .04 * 30 = 28,800

Math (Probability)
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 13/52 * 12/51 * 11/50 * 10/49 = ?

Math
1/2 * 1/2 = ?

Math
68%

Math
It is ± 1 SD. Use the rule.

Math 120
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 in the larger portion related to the Z score.

Maths
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.

Geometry
Volume = 8(?)2.5^2 = ?

math (?)

Math
Since order is not specified, with 4 possible outcomes, the probability of HT or TH = 1/2

Biology
Yes, when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. This increases the space in your chest cavity, into which your lungs expand.

bio
For example, if AB and OO type parents have children, the children will only be BO or AO.

Math
Volume = height * length * width Insert values to solve.

Math
You have shown no work of your own. I will help you a little. 3. If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events.

Science (?)
Have no idea what the t's indicate.

Math
It would help if you proofread your questions before you posted them. I assume you mean "8,600,000" and "by 14,000 MORE than one tenth of the previous population." 1.1(8,600,000) + 14,000 = ?

Science
Disagree

math
Cannot draw line plots on these posts nor can I identify a table that is not shown. You cannot copy and paste here. mean = sum of scores/number of scores = ?x/n Mode = most frequently occurring score. Median = 50th percentile I'll let you do the calculations.

statistics
White = 8/11 Black = 3/11 1) If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. P(BW) = 3/11 * 8/11 P(WB) = 8/11 * 3/11 Either-or probabilities are found by adding the individual ...

Math
If he loses "Rs 3" on every bottle, there is no gain. Have you omitted some data?

Science
I would say D.

Psychology (?)

Algebra
Cannot put table on these posts.

math
The largest area would be closest to a square. a) two 3-foot sections on each side, with two 3-foot sections and the gate on the center. b) three 3-foot sections on the two sides with the gate on one side. I'll let you do the calculations.

Math
Agree.

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. Also, on 9, there is no spinner shown. Cannot copy and paste here.

MATHS
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.

psychology
68%

Math
1. 15/20 = 3/4 = .75 2. 120 *.75 = ?

Math
The blue cars are the 4, so the red cars > blue cars. 7/4 = x/168 x = 294

Math
Area of base = 9*6/2 Volume = area of base * height Do the calculations.

Math
Welcome

Math
h = 11 * 4 b = 8 * 4 * 2 Combine them.

Cannot draw on these posts.

geometry
The maximum would be closest to a square. 2000m/3 = 667m 677^2 = ?

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. Make an attempt to solve these on your own, so we will respond. Consult your text.

Maths
1) 2,000 + 3,000 - 4,000 = ? 2) If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 3 * 2 * 2 = ? 3) 4^10 = ?

math
The numbers are the square of 2,3,4,5 and 7. Did you leave 36 out?

Statistics
60 - 40 = 20 55 to 60 = 6 Take it from there.

statistical reasoning
Null hypothesis = they are independent (there is just chance variation) Alternate hypothesis = they are not independent

biology (?)
What following? Cannot copy and paste here.

Math
A variable is something that varies/changes. Lisa - 7

Quantitative Statistic
Accept H1 when z < 1.96 Z = (score-mean)/SEm SEm = SD/?n Z = (215-220)/(15/8) = -5/1.875 = -2.667 Agree with e.

Quantitative Statistic
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.

1) Even if you pay more than the minimum, the interest will eat up whatever advantage you have in reward points or more. 2) Google simple vs compound interest. https://www.google.com/search?client=safari&rls=en&q=simple+vs+compund+interest&ie=UTF-8&oe=UTF-8 3) If he cannot pay...

Psychology

Science
The flowers need to have the hummingbird transfer the pollen from one flower to another as it drinks the nectar. What answer does that lead you to?

Science
Hummingbirds do not land on the flowers. They drink while in flight.

science
Since this is not my area of expertise, I searched Google under the key words "stages of thunderstorm development" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=3+stages+of+thunderstorm+development&ie=UTF-8&oe=UTF-8 In the future...

Math
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 3/15 * (3-1)/(15-1) = ?

Math (?)

Science
Angle of incidence is a measure of deviation of something from "straight on" and may refer to: Angle of incidence (aerodynamics), the angle between the chord of the wing and the longitudinal axis of the fuselage. Angle of incidence (optics), describing the approach ...

math
100A + 70C = 1100 50A + 50C = 625 Divide first equation by 2. 50A + 35C = 550 Subtract that from the second equation. 15C = 75 Solve for C, then insert into any of above equations to find A.

Math
6/.2 = 30 Cannot diagram on these posts.

math
Anything times zero = 0

Math (?)
No equations. Cannot copy and paste here.

Maths
Agree with B. B. How many had salad? 18 Of those, how many also had fruit? 7 So it is 7/18

statistics
(a) Sample mean is expected to be the same. (Standard Error of the mean) SEm = SD/?n (b) Assume equal times. One bulb = 500 hours. Z = (score-mean)/SD Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the ...

Math
Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. I am assuming that you want to know how many glasses it will fill. 4 cartons * 2/3 = 8/3 Therefore it would fill 8 glasses.

Math
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. (1-.2)^3 = ?

Algebra
Multiply the first equation by 12a and the second equation by 6 to solve.

Math
Cannot draw on these posts.

Math
-18+11 = -7

Math
Not sure what you are asking. 700?

science
Where do you live? What is the source of energy for the electric company in your area?

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