The nicotine content in cigarettes of a certain brand is normally distributed, w

Question

The nicotine content in cigarettes of a certain brand is normally distributed, with mean(in milligrams) u and standard deviation of 0.1. The brand advertises that the mean nicotine content of its cigarettes is 1.5, but measurements on a random sample of 100 cigarettes of this brand give a mean of 1.53. Is this evidence that the mean nicotine content is actually higher than advertised? To answer this, test the hypotheses

Ho: u=1.5, Ha:u>1.5

at the 5% significance level. You conclude:

a) that Ho should be rejected

b) that Ho should not be rejected

c) that Ha should be rejected

d) there is a 5% chance that the null hypothesis is true

Explanation / Answer

H0:

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.