$9.[-/2$ Points$]$ DETAILS SCALCET$98\mathrm{.}5\mathrm{.}017.$ MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER The speeds of vehicles on a highway with speed limit $90$ km$/$h are normally distributed with mean $100$ km$/$h and standard deviation $6$ km$/$h$.($Round your answers to two decimal places.$)($a$)$ What is the probability that a randomly chosen vehicle is traveling at a legal speed? $\%($b$)$ If police are instructed to ticket motorists driving $110$ km$/$h or more, what percentage of motorist are targeted? $\%$ Need Help? Read It Watch I