An experiment that investigated the effectiveness of a nicotine lozenge for subjects who wanted to quit smoking. Before the treatments began, subjects answered background questions, including how many cigarettes they smoked per day. Among the 81 subjects in the study, the average was 22.0 cigarettes per day, and the standard deviation was 10.8 cigarettes per day. Give the margin-of-error for a 99% confidence interval for the average number of cigarettes.

5. to comply with implementation requirements, shops must ensure that paint booth exhaust systems use efficient spray booth filters. a) 75% b) 100% c) 50% d) 98%

Scientists observed a rock stratum and discovered some fossils. the image shows the fossils they discovered. what can you interpret from the image? an illustration showing layers rock with fossils embedded in some rock layers1. the dinosaur and the mammoth existed after the trilobites.2. the dinosaur and the armored fish existed before the trilobites.3. the trilobites and the armored fish died before the dinosaur.4. the trilobites and the armored fish were born after the dinosaur.5. the early mammoth is older than the trilobites.

Tim earns $9.20 per hour when he works at the college library how much money does he earn by working at the library for 4.5 hours