Recent content by ultimatejester

That is exactly what i thought. It is of unequal variances (Good thing i did the f-test). Anyways thanks for the help. Btw if some one does care, there is enough evidence to infer that the mean the mean undergraduate debt of Hispanic students graduating in 2005 is less than the mean...

I am having a little problem tackling this problem. I can't seem to figure out if this is a matched pair or not. What we would like to study is "whether the mean undergraduate debt of Hispanic students graduating in 2005 is less than the mean undergraduate debt of Asian-American students...

The null and alternative hypothesis are mentioned in my above post. You can't use the t-test. All you are allowed to do on data in count the occurences. Use proportions. Post here if you need more help. Thanks. Adil.A

Yes, i used proportions. You can change the code for success from 1,2,3,4,5 but the one you are really interested in is the "highly satisfied" or 1. I did a one tail test since the company wants to know where its is meeting the required 95% level. To get you started H0: u=95% H1: U<95%...

i got it figured out. Thanks for the help. It is greatly appreciated.:smile:

I could do proportions and use test statistic for proportions but the neutral category causes problem because that splits the customer base into categories. -Satisfied -Neutral -Dissatisfied.

Thank you for replying(much sooner than i expected :) I am familiar with chi distribution but i don't think it would work here since the population std. deviation and other attributes are unkown and because the data is ordinal i can't use basic techniques to figure them out either. All i have...

Can i use the same the techniques used for nominal data on the ordinal data. I can't seem to find help on hypothesis test for ordinal data. This question contains categories (customer satisfaction) and they are in order so the data must be ordinal but they haven't taught us how to conduct a test...

I have a exam tomorrow so i will greatly appreciate anyone who helps me on this one. The question has to be solved using law of conservation of energy. Q: A roller coaster starts from rest at point A and weighs 1000kg with the ppl in it and goes through the designed track. The height of the...

Thnx Tide for helping me. Its finally clear to me now i think :biggrin: . I am not up for this kinda stuff. Quantum theory is extremely complicated. Thnx again

Thnx for replying Tide. I think i have an idea about what you said :rolleyes: so that would mean the object is absorbing and emitting radiation at the same time. Also is it true about the object being black first and the glowing due to emissions. Thnx

Parth Dave is right. The system is at rest so the net force is 0. If that is not the case read below. the formula is W=Fcosd but what doesn't make sense is that you don't have the displacement. Are you sure it says 2L not 2m.

I think its D because the gravitational potential energy would be 0 for both the objects. A) doesn't make sense because both objects will be at rest B)there would be no momentum since speed is 0 when they are at rest. C)No kinetic energy because at rest D) <---------- is the answer.

Sorry if my physics isn't so good. I only go to High school. Anywayz here is what i understand about blackbody radiation. A blackbody is an object that completely absorbs all the radiation of any wavelength. right. Then blackbody radiation means that a blackbody emitting radiation. Here is what...

btw the answer at the back of the book says NO,7.10m