BUAL 2650 EXAM 2 CORRECT 100%

BUAL 2650 EXAM 2 CORRECT 100%

hypothesis
two sample t test - ANSWERnull: mu1 - mu2 = 0
alt: mu1 - mu2 (not equal) 0

standard error two
sample t test - ANSWER

standard error
paired t test - ANSWER

expected cell frequency
goodness of fit - ANSWER(population observed %)(total n)

expected cell frequency
homogeneity - ANSWER(# of rows)(# of columns) / total n

expected cell frequency
independence - ANSWER(# of rows)(# of columns) / total n

test statistic
two sample t test - ANSWERt = ( y(bar)1 - y(bar)2 ) / SE

hypothesis
paired t test - ANSWERnull: MUd = 0
alt: MUd (not equal) 0

hypothesis
goodness of fit - ANSWERnull: all proportions are the same as the sample

hypothesis
homogeneity - ANSWERnull: the two populations have the same proportion for...

hypothesis
independence - ANSWERnull: the two (variables) are independent of each other



test statistic
paired t test - ANSWERt = ( d(bar) ) / SE

d(bar) = sum of the differences of all the pairs

test statistic
goodness of fit - ANSWERchi squared = (observed - expected)^2 / expected