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.

	Two way table
	correct count	incorrect count	row total
Version A	395	87	482
Version B	473	45	518
Inferential statistics
n1	n2		phat 1	phat 2
482	518		0.819502075	0.91312741
Estimate of the difference between population proportions
phat1-phat2
-0.0936253
standard error of estimate
0.02142192
Confidence interval
you are 95% confident that p1-p2 is between
-0.1356123
and
-0.0516384
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
-4.3705387		1.2394E-05
To calculate the p-value H0:p1=p2 is assumed to be true
since the test is two sided H1 is H1:p1p2

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