Assume that the childhood asthma prevalences in Exercise 31 are normally distributed. Are you more likely to randomly select 1 city with childhood asthma prevalence less than 3.2% or to randomly select a sample of 10 cities with a mean childhood asthma prevalence less than 3.2%? Explain.

Data from exercise 31:

The mean percent of childhood asthma prevalence of 43 Chinese cities is 2.25%. A random sample of 30 Chinese cities is selected. What is the probability that the mean childhood asthma prevalence for the sample is greater than 2.6%? Assume σ = 1.30%.