This is a pretty straightforward problem but I am still learning. Please take a quick look and see if this was done correctly. Thank you.Problem: The producers of a new toothpaste claim that it prevents more cavities than other brands of toothpaste. A random sample of 60 people used the new toothpaste for six months. The mean number of cavities at their next checkup is 1.5. In the general population, the mean number of cavities at 6-month check-up is 1.73 (σ = 1.12). Solutionz_obt= (M-μ)/σ-M = (1.5-1.73)/1.12= -0.205Thank you.