ECMT1010 Computer Ass. 2 (2 Viewers)

[ToO LaZy ^*]

i saw on Bb an annoucement about Q3 in the quiz..
i checked again and now it's gone?..
does anyone know what it said?

 

[stazi]

it just said the quiz will be up 9am monday.

 

[ToO LaZy ^*]

nah, it was about the assignment

 

[stazi]

oh just click on the 30 days tab for announcements and ull see it.

 

[sarevok]

i'm confused about 3)c. what are the 'population means' the question is referring to?

 

[ToO LaZy ^*]

the whole set of data..as opposed to the 'sample' mean, where you just take a sample of the data

 

[sarevok]

so those periods are samples? but shouldn't there only be one population mean, so why is it a plural?

 

[jpr333]

It means population mean within each period. It is a pop mean but this mean differs for different periods of the population data.

 

[sarevok]

ah, ok, thanks. but what is the sample mean we use when constructing the confidence interval? is it the same as the pop mean in each period?

 

[jpr333]

Yes. For 10 characters; that's what i used

Edit- oh and my q1 and 2 answers are the same as yours 14people (whatever your name is ) and I even used a different method for variance in q2.

 

[011]

Can someome tell me exactly what the difference is between con and city?
Why is one on average so much less than the other?
Why is the first period of collection even less than brink's?

 

[stazi]

Yes. For 10 characters; that's what i used

Edit- oh and my q1 and 2 answers are the same as yours 14people (whatever your name is ) and I even used a different method for variance in q2.

Then we both win! Oh and its OneTimeForThePeople. It's from a tom green skit.
011-use your eyes to read the question. It explains what con and city are.

 

[sarevok]

yay, finished. pretty sure my q3 is wrong though.

 

[ToO LaZy ^*]

i can't do Q3 c)..
my manually worked out answer is completely different to my excel answer

where did i go wrong??

 

[stazi]

ill do it tomorrow Will let you know.

 

[04er]

for Question 1 (Yes, I'm just starting ) where it says 'Excel NORMDIST function' does that mean using PhStat or...???? I know someone else asked this same question but it doesn't seem to have been answered

 

[absolution*]

NORMDIST fuction has nothing to do with phstat. its a general function of excel.

it can be found in the same way as other function such as sum, max, min, mean, mode etc.

 

[s.m.i.t.h]

anyone done question 3c or d yet?
please help!

 

[stazi]

Stas to the rescue of ECMT1010. Together we will win.

YES! NO MORE GAY 4MARK COMP ASSES.

 

[Lainee]

Stas to the rescue of ECMT1010. Together we will win.

YES! NO MORE GAY 4MARK COMP ASSES.

In 2(a), in your first table, you seem to have a count of only 11. I'm pretty sure there should be 12 items in there. Just check that again?