Two way table
	correct count	incorrect count	row total
Version A	399	77	476
Version B	466	56	522
Inferential statistics
n1	n2		phat 1	phat 2
476	522		0.838235294	0.89272031
Estimate of the difference between population proportions
phat1-phat2
-0.054485
standard error of estimate
0.02153922
Confidence interval
you are 95% confident that p1-p2 is between
-0.0967019
and
-0.0122682
0 is NOT in the confidence interval so there is strong evidence there is a diffference in proportions
hypothesis testing
test stat		two sided pvalue
-2.5295728		0.011420149
To calculate the p-value H0:p1=p2 is assumed to be true
since the test is two sided H1 is H1:p1p2

Question 3

Paste dataset 3 into an appropriate dataset summarizer refer to the following video https://youtu.be/t_lbrx0xZdk

1. Paste in computer output that measure evidence for the claim there is a relationship between the variables "which version?" and "correct or incorrect?" if you consider the whole population

Hint: inferential statistics measure evidence for a claim.

1. Calculate the z test stat for sample proportion , the formula is =