The nicotine content in cigarettes of a certain brand is normally distributed with mean
(in milligrams) m and standard deviation s = 0.1. The brand advertises that the mean
nicotine content of their cigarettes is 1.5, but measurements on a random sample of 400
cigarettes of this brand gave a mean of x = 1.52. Is this evidence that the mean nicotine
content is actually higher than advertised? To answer this, test the hypotheses
H0: m = 1.5, Ha: m > 1.5
at significance level a = 0.01. You conclude
A) that H0 should be rejected.
B) that H0 should not be rejected.
C) that Ha should be rejected.
D) that there is a 5% chance that the null hypothesis is true.
