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April 16, 2014

April 16, 2014

Posted by **tracy** on Sunday, June 23, 2013 at 2:08pm.

(a) Determine the critical region and critical value that are used in the classical approach for testing the null hypothesis Ho: ì1 = ì2 = ì3 = ì4, with n = 19 and á = 0.01.

F

(b) Determine the critical region and critical value that are used in the classical approach for testing the null hypothesis Ho: ì1 = ì2 = ì3 = ì4 = ì5, with n = 17 and á = 0.05.

F

(c) Determine the critical region and critical value that are used in the classical approach for testing the null hypothesis Ho: ì1 = ì2 = ì3, with n = 19 and á = 0.05.

F

- statistics -
**tracy**, Sunday, June 23, 2013 at 2:40pmthis is the answers that I got and they were wrong. f>equal to 3.20 for a part and b part I got f>equal to 3.41 But they both are wrong do not thing I am sitting them up right, any help?

- statistics -
**MathGuru**, Sunday, June 23, 2013 at 7:00pmYou will need to determine "degrees of freedom between" and "degrees of freedom within" before checking an ANOVA table using alpha level.

To calculate df between:

k - 1 = 3 - 1 = 2

Note: k = number of levels.

To calculate df within:

N - k = 15 - 3 = 12

Note: N = total number of values in all levels.

Let's do part a) and see if you can work out the rest.

a) You have 4 levels. Your sample size is 19. Your alpha level is 0.01.

df between = k - 1 = 4 - 1 = 3

df within = N - k = 19 - 4 = 15

Checking the table using 0.01 alpha level using the above degrees of freedom, I see critical value of 5.42.

I'll let you try the rest.

- statistics -
**tracy12**, Sunday, June 23, 2013 at 9:24pmCan you give me a site for the correct values, I must not be looking at the same one or I am looking at the wrong ones because I can not get the numbers to match to the one you done. I do appreciate all your help.

- statistics -
**tracy**, Monday, June 24, 2013 at 7:12pmSo this is what I came up with on (b) 6.93 and (c) 6.48 and those were wrong. I think I am missing them at the beginning when k-1=?-1 and n-k=?-?. Which graph or table are you getting these from? I figure out the other one to come up with the answers but I must of missed the first part.

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