Question 1 1 pts You are trying to improve the facial recognition system in your companies security system. The current system recognises someone's face correctly 80%% of the time. Assuming a two-sided test with a significance level of o = 0.05 and power 0.95, how many people's faces must you scan to detect an increase of 10% in your new system. Question 2 1 pts Tony is investigating a new drug to improve (reduce) systolic blood pressure. They want to perform a 2-sample Z-test to compare the effectiveness of their new drug compared to the gold standard Beta- blockers. If they know that the standard deviation of systolic blood pressure on each drug is constant at o = 2 mmHg. what sample size is needed in each group to detect a difference of 3 mmHg with a significance of or = 0.01 and a power of 0.95