Wednesday

April 16, 2014

April 16, 2014

Total # Posts: 17,470

**Science (?)**

None listed.

**Statistics**

Using P ≤ .05, if the probability the results would occur by chance is P > .05, you would accept the null hypothesis. By using any level of significance, if it equals or is less than that level, you would be assuming that the results indicate significant differences. ...

**Statistics**

The sample size reduces variability of distribution of means as it gets larger, but does not effect the expected value for the sample mean.

**Science**

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

**Math (?)**

More data needed.

**science**

Since this is not my area of expertise, I searched Google under the key words "How does x ray radiation affect seed germination? " to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=How+does+x+ray+radiation+affect+seed+germination%3F...

**science help plzzzzzzzzzzzzzzz?**

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.

**math**

$90 + $35(5) = ?

**Math**

Since all months have teens with 1s and twenties with 2s, they would be the most often. 0 occurs three times. How about the other numbers? Watch out for February.

**Logrythmic Math needs help**

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

**Science**

Sounds good.

**Science**

When significant contradictory evidence is found.

**math**

$20 + .25m > $37 Solve for m.

**Science need help**

5 or if the experiment is replicated, 2 An independent variable is the potential stimulus or cause, usually directly manipulated by the experimenter, so it could also be called a manipulative variable. A dependent variable is the response or measure of results.

**statistics**

Victor or Junior, did you multiply my response to find the answer?

**statistics**

You have a lot of unnecessary data given to answer your question. .25 * 135 = ?

**Geometry**

A cube would have the least surface area. How well would a cube fit on our shelves?

**Psychology**

Albert Ellis’ ABC Theory A. Activating Experiences — usually some frustration B. Beliefs — what we think about the activating experiences, which mediates the experiences to determine the consequences. Problems are likely to be exaggerated if we 1. Ignore the pos...

**STATS2**

B http://en.wikipedia.org/wiki/Policy_analysis

**math (?)**

What are the statements?

**STATS**

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.

**algebra (?)**

All what?

**Religion needs help**

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

**statistics**

Arranged in order of value as you have them, with 20 scores, between the 17th and 18th scores would be the 90th percentile (defining the top 10%). Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the ques...

**math**

It would not make any difference how they arranged them in terms of age. Each swimmer would still have to swim 100m.

**Psychological Statistics**

What research situations have you chosen? IQ compared to GPA? (r = ?) IQ compared to letter grade in a particular course? (X^2 = ?) I'll leave the rationals up to you.

**science gr.8**

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.

**Statistics**

1.00 - .49 - .25 = ?

**science**

Since this is not my area of expertise, I searched Google under the key words "compare and contrast uplift and subsidence" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=compare+and+contrast+uplift+and+subsidence&ie=UTF-8&oe=UTF-8...

**Statistics**

Z = (score-mean)/SD You need the values of the mean and standard deviation. Unless you are dealing with a distribution of means, n does not matter.

**math (?)**

Each swimmer is supposed to swim 100m in one stroke. Given "4 by 100," is one swimmer going to swim two laps? Where is the fourth swimmer? What method are you using to break "up the distance of 400 meters by age"? The youngest gets to swim 200 meters? Each ...

**Math**

I didn't see any answers. Please only post once. Repeating posts or asking for help in another post 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.

**Math**

100 + 5 Equilateral means equal sides.

**Buisness Math (?)**

No matrices posted.

**BIOLOGY**

https://www.google.com/search?client=safari&rls=en&q=darwin+lamarck+comparison&ie=UTF-8&oe=UTF-8

**BIOLOGY**

Since this is not my area of expertise, I searched Google under the key words "plant animal differences" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=plant+animal+differences&ie=UTF-8&oe=UTF-8 In the future, you can find the inf...

**BIOLOGY (?)**

What problem are you considering?

**BIOLOGY (?)**

What hypothesis are you considering?

**BIOLOGY**

A control group is used to see if the same results would occur without the independent variable. An independent variable is the potential stimulus or cause, usually directly manipulated by the experimenter, so it could also be called a manipulative variable. A dependent variab...

**BIOLOGY**

To start, see if it is plugged in the wall socket. Since this is not my area of expertise, I searched Google under the key words "repair electric fan troubleshoot" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=repair+electric+fan...

**Statistics**

Although you indicate n = 17, you only have 16 scores listed. 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...

**Math**

From the way you have defined the problem, you cannot satisfy both criteria in one spin, unless they indicate the same number. 2, 4, 6, and 8 are multiples of 2. 4 = 2 * 2, so 2 is a factor of 4. 2 is one of the 8 alternatives = 1/8

**SAT MATH**

Every other number is odd, so 3000/2 = ?

**STATISTICS**

What you want is the probability of getting 1, 2 or 3 hermaphrodite plants. However, what is the total number of plants? If there are only three, then the answer = 1 (certainty). If the events are independent, the probability of both/all events occurring is determined by multi...

**Healthcare Statistic**

Ho: errors in shift one = errors in shift two Use principle indicated above to give second Ho.

**Healthcare Statistic**

Accepting Ho when it is actually false.

**Healthcare Statistic**

Rejecting Ho when it is actually true.

**Healthcare Statistic**

The smallest value.

**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 later post. Again, what are the total number of plants?

**math**

See previous post.

**psych**

I searched Google under the key words "biological and social influences of temperament" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=biological+and+social+influences+of+temperament&ie=UTF-8&oe=UTF-8 In the future, you can find t...

**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 95% = mean ± 1.96 ...

**5th grade science**

There are two criteria for your answer. What is a nonmetal? What is not an electrical conductor? What is left?

**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 95% = mean ± 1.96 ...

**science (?)**

What are your choices?

**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 later post.

**Intermediate FT**

Multiply equation by x. 3 + 4 + 2x = 2x Equation has no solution.

**Statistics**

From your limited data, there is no variability measure for t-test. I wouldn't even know how to figure the mean. You might want to use chi-square test for whatever you are hypothesizing. To use the Chi-square (X^2) method: X^2 = ∑ (O-E)^2/E, where O = observed freque...

**math**

Do you have a calendar? Count the days.

**Science**

Since this is not my area of expertise, I searched Google under the key words "nutrient definition" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=nutrient+definition&ie=UTF-8&oe=UTF-8 In the future, you can find the information y...

**math?**

Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. With three unknowns, you need more data.

**Statistics**

This is a little clearer. The larger portion (body) for positive Z scores is to the left. For negative Z scores, it is to the right. Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probabi...

**Statistics**

We cannot draw on these posts. The Z score is your score in terms of standard deviations from the mean. There would be a tail on both sides. Are you looking for the smaller portion? https://www.google.com/search?client=safari&rls=en&q=normal+distribution+standard+deviation&ie=...

**math (?)**

No problem at the bottom.

**Biology**

It used to be phenotypes, but if genomes are available, it could be either.

**psychology**

Since typically children do not have as many resources to deal with these conditions, I would assume their conditions are likely to be more severe and long-lasting.

**Statistics**

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability [(1-.95)/2] = Z = 1.96. You divide by 2, because you are considering both above and below. 95% = mean ± 1.96 SEm The othe...

**Science need help**

An independent variable is the potential stimulus or cause, usually directly manipulated by the experimenter, so it could also be called a manipulative variable. A dependent variable is the response or measure of results. 5 and 6.

**Statistics**

Next time, give your response, so we can evaluate it. True

**Statistics**

True

**Statistics**

True

**Biology**

I'm not sure exactly what you are asking. In psychology, positive control (or at least an attempt at it) involves incentives and rewards. Negative aspects involve punishment or lack/removal of reward. If this is what you are seeking, you should be able to think of examples.

**Algebra**

You got them all correct.

**Math**

Multiply first equation by 2. Assuming that y was accidentally eliminated in the second equation. 4x - 10y = 6 -4x + 10y = -6 Adding the two together: 0 = 0. One equation is just the negative of the other. In other words, if you multiply one equation by -1, you get the other.

**Statistics (?)**

What is your question?

**Science (?)**

What type of wave?

**math**

4/5 + 4/5 = ?

**math**

3/5 * 10 = ?

**math**

1/2 * 1/3 = ?

**math**

3 * 4 = ?

**statistics (?)**

What is your question? If you want to know Kelsey's score: Z = (score-mean)/SD -1.85 = (score-72)/4

**statistics**

(100*10)/(7*60) = ?

**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.

**Algebra!**

(1) Let x = standard shipments and y = express. y = 108 - x 3.5x + 7.5y = 506 Substitute 108-x for y in second equation and solve for x. Insert that value into the first equation and solve for y. Check by inserting both values into the second equation. (2) Use similar process ...

**science**

I assume you only need to determine the sex chromosomes. The daughter has XX sex chromosomes. Since she has hemophilia, a recessive gene on the X chromosome, she must have inherited the hemophilia from both parents. However, since the son also receives an X chromosome from mom...

**Statistic**

See your previous post.

**Statistic**

62,400/(100*#workdays in a year) = ?

**Statistics**

You might want to round it to the nearest person. It rounds to 17, but if you want all the records to be covered, you might round it up to 18. This would give the FTEs a little slack.

**Statistics**

8600/(100*5) = ?

**biology**

The girls all receive normal X chromosome from dad, meaning they cannot be more than carriers. If males get recessive gene, they will have hemophilia since there is no dominant gene on the Y chromosome to supress the hemophilia gene. How do you get six variations? XCXC, XcY XC...

**math**

Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. Assuming the comma has the same meaning as a period in the USA: 2.3 * -5 = -11.5

**Statistics**

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 * (13*3)/48 = ?

**Statistics 2**

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. A

**Math**

1600 + 17600*.081 + (29700-17600)*.09 = ?

**algebra 1**

With answer from B, Mean(for median) = (B + ?)/2 = 227

**algebra 1**

A. mean = ∑x/n = (225+245+222+230+x)/5 = 221 Solve for x. B. Arrange 5 score in order of value. Middle score is the median. C. With even number of scores, mean of the two middle scores = median

**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.

**Math.stat help :(**

Ho: mean1 = mean2 Ha: mean1 ≠ mean2 Since these are just samples rather than the whole population, µ is an inappropriate designation. µ is parameter rather than a statistic. Z = (mean1 - mean2)/standard error (SE) of difference between means SEdiff = √(...

**statistics**

It is the Z test (google it). Where is your confusion centered?

**statistics**

Z = (mean1 - mean2)/standard error (SE) of difference between means SEdiff = √(SEmean1^2 + SEmean2^2) SEm = SD/√n (n = # of trips) If only one SD is provided, you can use just that to determine SEdiff. Find table in the back of your statistics text labeled somethin...

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