To estimate the average number of cigarettes students smoke each day, a sample of 64 students was taken, from which an average of 2.3 cigarettes daily was obtained. If the population variance is σ² = 0.81. Estimate the average number of cigarettes smoked daily by all students using a 98% confidence interval.

Answer rating: 100% (QA)

Variance 081 therefore SD 081 09 64 8 Confidence Int... View the full answer