Question

A large survey of U.S. adults found that 23% think putting metal detectors in school would be the most effective way to stop violence in schools. You ask 10 adults selected at random if he or she thinks putting metal detectors in schools would be the most effective way to stop violence (Source: Associated Press).

Suppose 7 out of 10 of the randomly selected adults favor putting metal detectors in schools. What might this suggest?

Attach the histogram from Minitab of this binomial - can you explain how you made this

Answer 1

the point estimate for the proportion of the adults who think putting metal detectors in school would be the most effective way to stop violence in schools =

point estimate suggests that the true proportion is bigger than 0.23, hence we can conduct a Z test for proportion.

Hence we have evidence than the proportion of the U.S. adults that think putting metal detectors in school would be the most effective way to stop violence in schools is greater than 0.23