Determine what test to conduct for study a and for study b. Decide whether there is a significant difference between means.
PSYC 381: Assignment #3 1. A researcher tests if the introduction of fluoride to the drinking water will significantly reduce the average number of cavities among children. Last year the average number of cavities was μ = 2.32, with σ = 0.46. This year fluoride was introduced. Thirty six children are sampled, and have an […]