(b) the that the test rejects Ho when µ = 3 be due to the at many medical conditions improve over time. records the idence llege-age be convincing. (c) the response variable might not have an Normal distribution in the population. exactly margin of ly refuse years longer, on average. Whether mild activities like al ve the added life 2 months. A statistical test is more likely to find a significant increase in mean life expectancy if n't be expectancy ng a (a) it is based on a very large random sample. se an day's poll (b) it is based on a very small random sample. (c) The size of the sample doesn't have any effect on the statistical significance of the test. es sed on 15.25 A medical experiment compared the herb echinacea with a placebo for preventing colds. One "volume of nasal secretions" (if you °t be variable was response have a cold, you blow your nose a lot). We consider the average volume of nasal secretions in people without colds to be u = 1. An increase to µ = 3 indicates a cold. In %3D WO t be testing Ho: µ =1 versus Ha:µ > 1, a Type I error would be 3D1 is is (a) rejecting Ho when µ = 1 is true. (b) rejecting Ho when u = 3 is true. ervals. (c) failing to reject Ho when µ>1 is true. r of 15.26 (Optional) In Exercise 15.25, the power of the test against the specific alternative u =3 is (a) the probability that the test rejects Ho when µ = 1 d for %3D abrot is true. (b) the probability that the test rejects Ho when H=? is true