David signed a contract that says he must build 10 dog houses for the spca. the organization wants them ready within one month. for every dog house he completes he will receive $0 an for every one he fails to complete he will be fined $10. at the end of the month david received $150. how many dog houses did he build?

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