Ocr mei s2

There were 4 values in one row and 3 in the other
(4-1)(3-1)=6
The forth value in a table was “unknown”

why was v 6 and not 4? Bcos (3-1)(3-1)=4? confused

there were four age categories, 2001-2007, 2008-2012, 2013-2017 and unknown

(3-1) x (4-1) is 2 x 3 which is 6.

but there was't any data for it in the table so why would it be included in the hypothesis test? lol

but there was't any data for it in the table so why would it be included in the hypothesis test? lol

You had two tests
The first test used 4 categories, you had to get it from the text, not from the table
The table comes after the first part of the question so obviously you shouldn’t use it for the first part

Do you think we would get any error carried forward marks for using v = 4?

Guys what did you get for the comment on the results with the new population mean and what can make the test more significant question

Guys what did you get for the comment on the results with the new population mean and what can make the test more significant question

I also did 4. How do you know it was 6

I put 4 aswell I don't see why it would be 6

For one question (it might have been the mean hypothesis test), the following part said something like "In fact, it is known that the mean is [something]. How could the test be changed, without changing the significance level, to make it more likely to detect this change?" Only problem is that I accepted H1 in the test anyway (i.e., detected a change) and then went back and checked through but couldn't find a mistake. Anyone else also accept H1 there or did I definitely mess up?

Edit: Wait, I just realised that my probability of the mean being less than it was was 0.0303 or something which is less than 0.05 but not less than 0.025, so I think I didn't split the significance for two-tailed. Whoops.

How did you define PMCC
I didn’t know how to define it, just said p(rho)- population PMCC for age and height

Might be a little late, but just saying where Rho is the population correlation coefficient for... is suffice

but there was't any data for it in the table so why would it be included in the hypothesis test? lol