A company is considering upgrading its computer system, and a major portion of the upgrade is a new operating system. The company has asked an engineer for an evaluation of the operating system....

A company is considering upgrading its computer system, and a major portion of the upgrade is a new operating system. The company has asked an engineer for an evaluation of the operating system. Suppose the probability of a favourable evaluation is 0.65. If the probability the company will upgrade its system given a favourable evaluation is 0.85, what is the probability that the company will upgrade and receive a favourable evaluation?