Test Definition and 1000 Threads

Not good. http://www.weather.com/news/science/virgin-galactics-spaceshiptwo-reports-flight-anomaly-20141031

K≥0 ∑ ((sqrt(k)+2)/(k+5)) I am trying to prove that this diverges. The divergence test is inconclusive. Now I am left with a great option of a comparison test. I'm not quite sure what to compare it with, but I know I need to compare it with something smaller (denominator is larger) that...

Hi guys, I am working on a project at work where we make part a which weighs 10 pounds and part b which weighs 13 pounds. Parts a and b both get packaged in a foam container. I have test data on part a that says it will survive drop tests, I was hoping to do analysis to say part b will also...

Hi! Need help on following question: Does a flexural bending test suffice for determining the structural integrity of a pre-preg honeycomb sandwhich panel with carbon phenolic face sheets and aluminium core? Any help will be deeply appreciated

I've often wondered what would be on a test designed by students? If the purpose of the test is to ascertain one's conceptual mastery, what do you think should be on it? Who knows? I might even take one of your responses seriously ...

Homework Statement the expected frequency for the age of (21-30, 31-36, more than or equal to 37) for operation is less than 5 , so combination of these numbers are required for the expected frequency to be more than or equal to 5 . my question is which numbers should i combine? would my ans...

Using a normal approximation method for the Wilcoxon Signed-Rank Test, I've seen that the expected value is \mu = \frac {n(n+1)}2 and the variance is \sigma^2 = \frac {n(n+1)(2n+1)}{24} . I'm wondering why these are the expected value and variance. I do recognize the formula for the sum of...

Homework Statement . A rock is dropped from a high tower and falls freely under the influence of gravity. Which one of the following statements concerning the rock as it falls is true? Neglect the effects of air resistance.(a) The rock will gain an equal amount of momentum during each...

Homework Statement i have problem of finding the degree f freedom for this question. the ans for v is 3 , but my ans is v=n-1 , where n = 6 , so my v=5... Homework EquationsThe Attempt at a Solution

I'm reading a book by Harry J. Gensler in which he introduces his 'star test' for checking whether or not a syllogism is valid. According to the star method the premises; all A is B all A is C has no valid conclusion. But wouldn't; some B is C be a valid conclusion? Sorry if this is kind of...

http://nypost.com/2014/09/28/what-is-the-pentagons-secret-space-drone-doing/ Cool article. Couple of questions: Why do they need to use self-contained atmospheric protective ensemble suits around the drone? Is that yellow object the man is carrying in the first pic a Geiger counter?

The only reason I ask is that I'm in both classes (AP Physics C:Mechanics/AP Calc BC) and I find myself using formulas from one class to answer the question in another class. I did one question in Calc involving the motion of an object and used some physics formulas to solve it. The work for...

Homework Statement A 10.0-kg block is released from rest on a quarter pipe 3.00m high. The track is frictionless except for a length (6.00m). The block travels down this track and hits a spring of force constant 2,250 N/m, and compresses the spring 0.300m from its equilibrium position before...

To test mass affects acceleration. is it correct to change the mass of plasticine attached to the trolley and measure the length of the ticker tape strip with the constant variable be the angle of the inclined plane?

Homework Statement Problem: a) Find the Fourier transform of the Dirac delta function: δ(x) b) Transform back to real space, and plot the result, using a varying number of Fourier components (waves). c) test by integration, that the delta function represented by a Fourier integral integrates...

Lets say there is a drug that proposes to make one grow taller. A study is performed and the results state that there IS statistical difference with a Z = 3.1 p<.05. What should be stated about the magnitude of the increase in height? Should the study also have to state the magnitude of the...

Hello all, Consider 3 different samples. Each sample is independent. 1: 23, 25, 21, 22, 21, 22, 20, 23, 19, 22, 19, 21 2: 28, 27, 27, 29, 26, 29, 27, 30, 28, 27, 26, 29 3: 23, 20, 25, 21, 22, 23, 21, 20, 19, 20, 22, 21 I am being asked to test whether μ2 - μ1 = μ3 - μ2 with 99%...

How far can you go? I only got up to 7 digits http://cognitivefun.net/test/10

I need to create scales for a test before running t-tests / ANOVA. Instrument: One attitude survey test with 37 questions. Each question is a Likert type question with 1 to 5 points. Data Set: The set of data includes pre-test and post-test scores. There was a 6 month delay between the...

With another microphone? And how do you test the accuracy of that microphone? With yet another microphone? ...and on and on we go I suppose you're probably thinking to yourself, "well that's easy BeautifulLight, just set up an experiment using a signal/tone generator, couple of microphones...

Hey gang, I was wondering if there is a non-parametric version of the single set TTest? I know that often people refer to the Wilcoxon signed-rank test, but my understanding is that only tells you about the median, correct? Is there an equivalent that deals strictly with the mean? Cheers!

Here's an idea that I came up with. I've heard over and over again that there is no test yet available to confirm string theory. So what I say is... What if you could derive some fundamental physics equation from string theory principles? Then wouldn't that be a test so to speak...

Hi can someone please clarify info regarding the application and validity of the Dickey Fuller test. If I perform the test using a sine wave would I be required to somehow take into account the seasonality. From my understanding a sine wave is non stationary, using the MATLAB command below I...

New here and this is my first post. I've developed an online psychrometric calculator and I believe it is now working perfectly. I would like someone or anyone who has expertise in this area to check my work. The link is...

So I am trying to test into the Calculus with Analytic Geometry class at my school. I've already taken the first AP Calculus class my senior year of high school (but wasn't particularly concerned with my grade, and never took the test, since it was an extra curricular class for me). Then I took...

Just wanted to let the forum know that through some diligence I have been approved to take the Fundamental Engineering test in South Carolina with a B.S. in Physics. I took about a extra year worth of advanced engineering classes along with skipped all freshman and sophomore engineering...

these are technically not homework, i just need more help for my test tomorrow! I HAVE NO IDEA HOW TO DO THIS! can someone walk me through these and show me the steps! thank you :):confused: 1.A sled is being pulled to the right with a force of 28 N. A frictional force is working opposite...

1. What is the strength of the gravitational field (in N/kg) at an orbit of 1.0 x106 m above the planet Zoklopgniald with mass of 3.45 x1026 kg and mean radius of 7.80 x107m? ANS:3.69 N/kg What is the gravitational force exerted on a 2840 kg satellite orbiting Zoklopgniald at this altitude...

Homework Statement 1+\dfrac{2^2}{2!}+\dfrac{3^2}{3!}... \infty The Attempt at a Solution t_n = \dfrac{n^2}{n!} \\ \dfrac{n}{(n-1)(n-2)...1} I tried applying the Ratio Test but couldn't find another function which would give me a finite limit when divided by that function.

This simple code is test the write and read of EEPROM. Firstly the LED at P1 will have all LED on, after a sec, have the P1 will have LED on. Next, code is to write 01010101B into the EEPROM. CJNE will check to see if it is written. But, after comparing, the data isn't similar...

The following question was supposedly given in an admissions test for an elementary school in Hong Kong.

comparison or root test? for testing convergence/divergence $\sum_{k=1}^{\infty}\frac{(-3)^{k+1}}{4^{2k}}$

Let's say I'm applying electrical currents to a certain part of a human test subject and measuring certain deflections in his heart readings during this period. Before I increase the electrical currents, which could be dangerous, I'm interested to see if the changes in electrical currents are...

Hello. How do I find the limit of this term? $$\lim_{{n}\to{\infty}}|\left(\frac{n}{n+1}\right)^{\!{n^2}}|^\frac{1}{n}$$ This is the working but I don't understand how to get the third line. r = lim(n→∞) |[n/(n+1)]^(n^2)|^(1/n) ..= lim(n→∞) [n/(n+1)]^n ..= lim(n→∞) 1 / [(n+1)/n]^n...

Hello. How do I find the limit of this term? $$\lim_{{n}\to{\infty}}|\left(\frac{n}{n+1}\right)^{\!{n^2}}|^\frac{1}{n}$$

This technically might not belong here, mods, put it in it's proper place if not. So I'm studying for a test on Monday. Not a big deal, we use webassign, you may commence with the horrified gasps and groans, I know. So here's my odd little situation. I get a problem like this one Integral...

Hello. How do I determine whether to use ratio test or root test in determining whether a series is convergent or divergant? For example, in this problem, ratio is used for no.1 and root test for no.2. Why is that? I need explanation, please.

Hello. How do I determine whether to use ratio test or root test in determining whether a series is convergent or divergant? For example, in this problem, ratio is used for no.1 and root test for no.2. Why is that? I need explanation, please.

Just a few quick questions this time: I'm doubting the first one mostly, because when I used the integral test to evaluate it: I ended up getting (-1/x)(lnx +1) from 2 to infinity, which gave me an odd expression: (-1/infinity)(infinity +1 -ln2 -1). I'm assuming this means it is convergent...

I need to test the ph of river. I need a method of making an indicator that I can make at home. Please help !

Hello, Given the complex linear mapping: T(z) = Az + B where A is real and B is complex. However trying to show that T(a * z1 + z2) = a * T(z1) + T(z2) does not work which implies the mapping is not linear? Why does not this rule apply here? Thanks.

I am doing critical points and using the second derivative test (multivariable version) Homework Statement f(x,y) = (x^2+y^2)e^{x^2-y^2} Issue I am having is with the system of equations to get the critical points from partial wrt x, wrt y The Attempt at a Solution f_{x} =...

Hi All, I am trying too undestand the slit test which shows wave-particle duality. Please correct me if I am wrong on the basic info on the test. One photon is shot out and if there is one slit it will go through the slit and make a point on the detection medium behind the slit. However if both...

VLSI testing is process that is used to determine that chip is good or faulty VLSI chip is tested by test equipment and some test circuit can anybody tell me the example of some test circuit actually I am confused I don't understand that fault model and test circuit are different or...

I have a pressure vessel of volume V= 1 m^3 . The atmospheric pressure Patm = 101 kPa and Tatm = 22 C. I slowly pump liquid water into the pressure vessel until the internal pressure reaches P1 = 15 MPa. Also, the process is isothermal because the water was pumped in slowly and heat is exchange...

Homework Statement Hey! So I just have a quick question. In my notes I wrote down that the alternating series test only proves absolute or conditional convergence, but can not prove divergence. Is this true or did I misunderstand my professor? Homework Equations The Attempt at a...

Homework Statement Hello, I am working on problems 6-14 on the attached PDF. Don't be scared off, they are just one line of code each. I got number 6 correct, and I got partial credit on 7 and 8, but I am trying to figure out why it is not right. Homework Equations The Attempt at a...

I'm trying to find if this series converges or diverges using the comparison test: and the answer goes: My problem is, I am not sure how to go from 1/2^(n+1) to 1/2(1/2)^n. can you please explain that to me

This is not a homework problem. I'm doing it for fun. But it is the kind that might appear on homework. Homework Statement I'm trying to prove that if lim n→∞ |an+1/an| = L < 1, then \Sigma an converges absolutely and therefore converges. Homework Equations The Attempt at a Solution Here's...

Paired means test vs two-sample means test [solved] Hi. When it comes to hypothesis testing, what is the difference between the two-sample tests and the paired test? I know one difference is that you use the latter when the two variables are dependant and the former when they're...