Mark Twain said, “facts are stubborn things, but statistics are pliable.” How can statistics be used to manipulate facts, and what steps should ethical researchers take to prevent this manipulation? How can this enhance professional success?

### The null hypothesis is Ho: p1=p2 and alternative is Ha: p1 not = to…

The null hypothesis is Ho: p1=p2 and alternative is Ha: p1 not = to p2 and level of significance is alpha =0.05 My question is if i am using a two tailed z test for this then why am I using the two tailed z hypothesis test?