In a class of 30 students, 25 study French (F), 18 study Spanish (S). One student does not study French or Spanish.
a) Find the number of students who study French and Spanish.

An optical inspection system is used to distinguish among different part types. the probability of a correct classification of any part is 0.92. suppose that three parts are inspected and that the classifications are independent. let the random variable x denote the number of parts that are correctly classified. determine the probability mass function of x. round your answers to four decimal places (e. g. 98.7654). x f(x) 0 1 2 3

If a suspect is in possession of 20 grams of cocaine how many ounces does he possess what will the charge be

Travis and paula went to lunch. travis ordered a sandwich for $7.50 and paula ordered a burger for $5.25.after lunch, they left a 15% tip for the waiter. how many money did they spend altogether?